Steve Dondley
2021-Apr-29 13:40 UTC
What imap ssl/auth settings work best with MS Outlook?
> I am using Outlook without any problems what so ever. > > It sounds to me like you are setting up Outlook to use port 465. In the > setup screen, set the port to either "25" or "587". I am using "587" > with "starttls" Your "incoming mail port" will depend on how you have > Dovecot configured. I use port "143" with "starttls" for Outlook. YMMV > depending on your configuration. > > You might want to consider posting the output of "doveconf -a" and how > you have Outlook configured.To get things working with the client I had to set "disable_plaintext_auth = no" and have them use port 143. Obviously, this is not ideal. I could not get 993 working at all with the client's version of outlook. However, on MS 365, outlook works just fine. It's insane. # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.19.0-16-cloud-amd64 x86_64 Debian 10.9 # NOTE: Send doveconf -n output instead when asking for help. auth_anonymous_username = anonymous auth_cache_negative_ttl = 1 hours auth_cache_size = 0 auth_cache_ttl = 1 hours auth_cache_verify_password_with_worker = no auth_debug = no auth_debug_passwords = no auth_default_realm auth_failure_delay = 2 secs auth_gssapi_hostname auth_krb5_keytab auth_master_user_separator auth_mechanisms = plain login auth_policy_check_after_auth = yes auth_policy_check_before_auth = yes auth_policy_hash_mech = sha256 auth_policy_hash_nonce auth_policy_hash_truncate = 12 auth_policy_reject_on_fail = no auth_policy_report_after_auth = yes auth_policy_request_attributes = login=%{requested_username} pwhash=%{hashed_password} remote=%{rip} device_id=%{client_id} protocol=%s auth_policy_server_api_header auth_policy_server_timeout_msecs = 2000 auth_policy_server_url auth_proxy_self auth_realms auth_socket_path = auth-userdb auth_ssl_require_client_cert = no auth_ssl_username_from_cert = no auth_stats = no auth_use_winbind = no auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Ln auth_username_translation auth_verbose = no auth_verbose_passwords = no auth_winbind_helper_path = /usr/bin/ntlm_auth auth_worker_max_count = 30 base_dir = /var/run/dovecot config_cache_size = 1 M debug_log_path default_client_limit = 1000 default_idle_kill = 1 mins default_internal_group = dovecot default_internal_user = dovecot default_login_user = dovenull default_process_limit = 100 default_vsz_limit = 256 M deliver_log_format = msgid=%m: %$ dict_db_config director_flush_socket director_mail_servers director_max_parallel_kicks = 100 director_max_parallel_moves = 100 director_output_buffer_size = 10 M director_ping_idle_timeout = 30 secs director_ping_max_timeout = 1 mins director_servers director_user_expire = 15 mins director_user_kick_delay = 2 secs director_username_hash = %u disable_plaintext_auth = no dotlock_use_excl = yes doveadm_allowed_commands doveadm_api_key doveadm_http_rawlog_dir doveadm_password doveadm_port = 0 doveadm_socket_path = doveadm-server doveadm_username = doveadm doveadm_worker_count = 0 dsync_alt_char = _ dsync_commit_msgs_interval = 100 dsync_features dsync_hashed_headers = Date Message-ID dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -U first_valid_gid = 1 first_valid_uid = 500 haproxy_timeout = 3 secs haproxy_trusted_networks hostname imap_capability imap_client_workarounds imap_fetch_failure = disconnect-immediately imap_hibernate_timeout = 0 imap_id_log imap_id_retain = no imap_id_send = name * imap_idle_notify_interval = 2 mins imap_literal_minus = no imap_logout_format = in=%i out=%o deleted=%{deleted} expunged=%{expunged} trashed=%{trashed} hdr_count=%{fetch_hdr_count} hdr_bytes=%{fetch_hdr_bytes} body_count=%{fetch_body_count} body_bytes=%{fetch_body_bytes} imap_max_line_length = 64 k imap_metadata = no imap_urlauth_host imap_urlauth_logout_format = in=%i out=%o imap_urlauth_port = 143 imapc_cmd_timeout = 5 mins imapc_connection_retry_count = 1 imapc_connection_retry_interval = 1 secs imapc_features imapc_host imapc_list_prefix imapc_master_user imapc_max_idle_time = 29 mins imapc_max_line_length = 0 imapc_password imapc_port = 143 imapc_rawlog_dir imapc_sasl_mechanisms imapc_ssl = no imapc_ssl_verify = yes imapc_user import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS info_log_path instance_name = dovecot last_valid_gid = 0 last_valid_uid = 0 lda_mailbox_autocreate = no lda_mailbox_autosubscribe = no lda_original_recipient_header libexec_dir = /usr/lib/dovecot listen = *, :: lmtp_hdr_delivery_address = final lmtp_proxy = no lmtp_proxy_rawlog_dir lmtp_rawlog_dir lmtp_rcpt_check_quota = no lmtp_save_to_detail_mailbox = no lmtp_user_concurrency_limit = 0 lock_method = fcntl log_core_filter log_debug log_path = syslog log_timestamp = "%b %d %H:%M:%S " login_access_sockets login_greeting = Dovecot (Debian) ready. login_log_format = %$: %s login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c session=<%{session}> login_plugin_dir = /usr/lib/dovecot/modules/login login_plugins login_proxy_max_disconnect_delay = 0 login_proxy_notify_path = proxy-notify login_source_ips login_trusted_networks mail_access_groups mail_always_cache_fields mail_attachment_detection_options mail_attachment_dir mail_attachment_fs = sis posix mail_attachment_hash = %{sha1} mail_attachment_min_size = 128 k mail_attribute_dict mail_cache_compress_continued_percentage = 200 mail_cache_compress_delete_percentage = 20 mail_cache_compress_header_continue_count = 4 mail_cache_compress_min_size = 32 k mail_cache_fields = flags mail_cache_min_mail_count = 0 mail_cache_record_max_size = 64 k mail_cache_unaccessed_field_drop = 30 days mail_chroot mail_debug = no mail_fsync = optimized mail_full_filesystem_access = no mail_gid mail_home mail_index_log2_max_age = 2 days mail_index_log_rotate_max_size = 1 M mail_index_log_rotate_min_age = 5 mins mail_index_log_rotate_min_size = 32 k mail_index_rewrite_max_log_bytes = 128 k mail_index_rewrite_min_log_bytes = 8 k mail_location = maildir:~/Maildir mail_log_prefix = "%s(%u)<%{pid}><%{session}>: " mail_max_keyword_length = 50 mail_max_lock_timeout = 0 mail_max_userip_connections = 10 mail_never_cache_fields = imap.envelope mail_nfs_index = no mail_nfs_storage = no mail_plugin_dir = /usr/lib/dovecot/modules mail_plugins = " fts fts_solr" mail_prefetch_count = 0 mail_privileged_group = mail mail_save_crlf = no mail_server_admin mail_server_comment mail_shared_explicit_inbox = no mail_sort_max_read_count = 0 mail_temp_dir = /tmp mail_temp_scan_interval = 1 weeks mail_uid mail_vsize_bg_after_count = 0 mailbox_idle_check_interval = 30 secs mailbox_list_index = yes mailbox_list_index_include_inbox = no mailbox_list_index_very_dirty_syncs = no maildir_broken_filename_sizes = no maildir_copy_with_hardlinks = yes maildir_empty_new = no maildir_stat_dirs = no maildir_very_dirty_syncs = no managesieve_client_workarounds managesieve_implementation_string = Dovecot (Debian) Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext master_user_separator mbox_dirty_syncs = yes mbox_dotlock_change_timeout = 2 mins mbox_lazy_writes = yes mbox_lock_timeout = 5 mins mbox_md5 = apop3d mbox_min_index_size = 0 mbox_read_locks = fcntl mbox_very_dirty_syncs = no mbox_write_locks = fcntl dotlock mdbox_preallocate_space = no mdbox_rotate_interval = 0 mdbox_rotate_size = 10 M mmap_disable = no namespace inbox { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location mailbox Drafts { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Drafts } mailbox Junk { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Junk } mailbox Sent { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Sent } mailbox "Sent Messages" { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Sent } mailbox Trash { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment driver special_use = \Trash } order = 0 prefix separator subscriptions = yes type = private } old_stats_carbon_interval = 30 secs old_stats_carbon_name old_stats_carbon_server old_stats_command_min_time = 1 mins old_stats_domain_min_time = 12 hours old_stats_ip_min_time = 12 hours old_stats_memory_limit = 16 M old_stats_session_min_time = 15 mins old_stats_user_min_time = 1 hours passdb { args = /etc/dovecot/aliases auth_verbose = default default_fields deny = no driver = passwd-file master = no mechanisms name override_fields pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter } passdb { args auth_verbose = default default_fields deny = no driver = pam master = no mechanisms name override_fields pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter } plugin { fts = solr fts_autoindex = yes fts_decoder = decode2text fts_solr = url=http://172.30.0.94:8983/solr/dovecot/ recipient_delimiter = + sieve = file:~/sieve;active=~/.dovecot.sieve sieve_default = /var/lib/dovecot/sieve/default.sieve sieve_default_name = Defaults sieve_global = /var/lib/dovecot/sieve } pop3_client_workarounds = outlook-no-nuls pop3_delete_type = default pop3_deleted_flag pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no pop3_save_uidl = no pop3_uidl_duplicates = allow pop3_uidl_format = %08Xu%08Xv pop3c_features pop3c_host pop3c_master_user pop3c_password pop3c_port = 110 pop3c_quick_received_date = no pop3c_rawlog_dir pop3c_ssl = no pop3c_ssl_verify = yes pop3c_user = %u postmaster_address = postmaster@%{if;%d;ne;;%d;%{hostname}} protocols = " imap lmtp sieve pop3 sieve" quota_full_tempfail = no rawlog_dir recipient_delimiter = + rejection_reason = Your message to <%t> was automatically rejected:%n%r rejection_subject = Rejected: %s replication_dsync_parameters = -d -N -l 30 -U replication_full_sync_interval = 1 days replication_max_conns = 10 replicator_host = replicator replicator_port = 0 sendmail_path = /usr/sbin/sendmail service aggregator { chroot = . client_limit = 0 drop_priv_before_exec = no executable = aggregator extra_groups fifo_listener replication-notify-fifo { group mode = 0600 user } group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener replication-notify { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service anvil { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = anvil extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 1 protocol service_count = 0 type = anvil unix_listener anvil-auth-penalty { group mode = 0600 user } unix_listener anvil { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service auth-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = auth -w extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 1 type unix_listener auth-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service auth { chroot client_limit = 0 drop_priv_before_exec = no executable = auth extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-client { group mode = 0600 user = $default_internal_user } unix_listener auth-login { group mode = 0600 user = $default_internal_user } unix_listener auth-master { group mode = 0600 user } unix_listener auth-userdb { group mode = 0666 user = $default_internal_user } unix_listener login/login { group mode = 0666 user } unix_listener token-login/tokenlogin { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service config { chroot client_limit = 0 drop_priv_before_exec = no executable = config extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type = config unix_listener config { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service decode2text { chroot client_limit = 0 drop_priv_before_exec = no executable = script /usr/share/doc/dovecot-core/examples/decode2text.sh extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener decode2text { group mode = 0666 user } user = dovecot vsz_limit = 18446744073709551615 B } service dict-async { chroot client_limit = 0 drop_priv_before_exec = no executable = dict extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dict-async { group = $default_internal_group mode = 0660 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dict { chroot client_limit = 1 drop_priv_before_exec = no executable = dict extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dict { group = $default_internal_group mode = 0660 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service director { chroot = . client_limit = 0 drop_priv_before_exec = no executable = director extra_groups fifo_listener login/proxy-notify { group mode = 00 user } group idle_kill = 4294967295 secs inet_listener { address haproxy = no port = 0 reuse_port = no ssl = no } privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener director-admin { group mode = 0600 user } unix_listener director-userdb { group mode = 0600 user } unix_listener login/director { group mode = 00 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dns_client { chroot client_limit = 1 drop_priv_before_exec = no executable = dns-client extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type unix_listener dns-client { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service doveadm { chroot client_limit = 1 drop_priv_before_exec = no executable = doveadm-server extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 1 type unix_listener doveadm-server { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service imap-hibernate { chroot client_limit = 0 drop_priv_before_exec = no executable = imap-hibernate extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = imap service_count = 0 type unix_listener imap-hibernate { group = $default_internal_group mode = 0660 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = imap-login extra_groups group idle_kill = 0 inet_listener imap { address haproxy = no port = 143 reuse_port = no ssl = no } inet_listener imaps { address haproxy = no port = 993 reuse_port = no ssl = yes } privileged_group process_limit = 0 process_min_avail = 0 protocol = imap service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-login { chroot = token-login client_limit = 0 drop_priv_before_exec = no executable = imap-urlauth-login extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = imap service_count = 1 type = login unix_listener imap-urlauth { group mode = 0666 user } user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth-worker extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener imap-urlauth-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service imap-urlauth { chroot client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth extra_groups group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener token-login/imap-urlauth { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap { chroot client_limit = 1 drop_priv_before_exec = no executable = imap extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type unix_listener imap-master { group mode = 0600 user } unix_listener login/imap { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service indexer-worker { chroot client_limit = 1 drop_priv_before_exec = no executable = indexer-worker extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 10 process_min_avail = 0 protocol service_count = 0 type unix_listener indexer-worker { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service indexer { chroot client_limit = 0 drop_priv_before_exec = no executable = indexer extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener indexer { group mode = 0666 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service ipc { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = ipc extra_groups group idle_kill = 0 privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener ipc { group mode = 0600 user = $default_internal_user } unix_listener login/ipc-proxy { group mode = 0600 user = $default_login_user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service lmtp { chroot client_limit = 1 drop_priv_before_exec = no executable = lmtp extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = lmtp service_count = 0 type unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } unix_listener lmtp { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service log { chroot client_limit = 0 drop_priv_before_exec = no executable = log extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type = log unix_listener log-errors { group mode = 0600 user } user vsz_limit = 18446744073709551615 B } service managesieve-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = managesieve-login extra_groups group idle_kill = 0 inet_listener sieve { address haproxy = no port = 4190 reuse_port = no ssl = no } privileged_group process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service managesieve { chroot client_limit = 1 drop_priv_before_exec = no executable = managesieve extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type unix_listener login/sieve { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service old-stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = old-stats extra_groups fifo_listener old-stats-mail { group mode = 0600 user } fifo_listener old-stats-user { group mode = 0600 user } group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener old-stats { group mode = 0600 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service pop3-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = pop3-login extra_groups group idle_kill = 0 inet_listener pop3 { address haproxy = no port = 110 reuse_port = no ssl = no } inet_listener pop3s { address haproxy = no port = 995 reuse_port = no ssl = yes } privileged_group process_limit = 0 process_min_avail = 0 protocol = pop3 service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service pop3 { chroot client_limit = 1 drop_priv_before_exec = no executable = pop3 extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = pop3 service_count = 1 type unix_listener login/pop3 { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service replicator { chroot client_limit = 0 drop_priv_before_exec = no executable = replicator extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener replicator-doveadm { group mode = 00 user = $default_internal_user } unix_listener replicator { group mode = 0600 user = $default_internal_user } user vsz_limit = 18446744073709551615 B } service stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = stats extra_groups group idle_kill = 4294967295 secs privileged_group process_limit = 1 process_min_avail = 0 protocol service_count = 0 type unix_listener stats-reader { group mode = 0600 user } unix_listener stats-writer { group = $default_internal_group mode = 0660 user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service submission-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = submission-login extra_groups group idle_kill = 0 inet_listener submission { address haproxy = no port = 587 reuse_port = no ssl = no } privileged_group process_limit = 0 process_min_avail = 0 protocol = submission service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service submission { chroot client_limit = 1 drop_priv_before_exec = no executable = submission extra_groups = $default_internal_group group idle_kill = 0 privileged_group process_limit = 1024 process_min_avail = 0 protocol = submission service_count = 1 type unix_listener login/submission { group mode = 0666 user } user vsz_limit = 18446744073709551615 B } service tcpwrap { chroot client_limit = 1 drop_priv_before_exec = no executable = tcpwrap extra_groups group idle_kill = 0 privileged_group process_limit = 0 process_min_avail = 0 protocol service_count = 0 type user = $default_internal_user vsz_limit = 18446744073709551615 B } shutdown_clients = yes ssl = required ssl_alt_cert ssl_alt_key ssl_ca ssl_cert = </etc/letsencrypt/live/email.example.com/fullchain.pem ssl_cert_username_field = commonName ssl_cipher_list = ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW at STRENGTH ssl_client_ca_dir = /etc/ssl/certs ssl_client_ca_file ssl_client_cert ssl_client_key ssl_crypto_device ssl_curve_list ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_key_password ssl_min_protocol = TLSv1 ssl_options ssl_prefer_server_ciphers = no ssl_require_crl = yes ssl_verify_client_cert = no state_dir = /var/lib/dovecot stats_writer_socket_path = stats-writer submission_client_workarounds submission_host submission_logout_format = in=%i out=%o submission_max_mail_size = 40 M submission_max_recipients = 0 submission_relay_command_timeout = 5 mins submission_relay_connect_timeout = 30 secs submission_relay_host submission_relay_master_user submission_relay_max_idle_time = 29 mins submission_relay_password submission_relay_port = 25 submission_relay_rawlog_dir submission_relay_ssl = no submission_relay_ssl_verify = yes submission_relay_trusted = no submission_relay_user submission_ssl = no submission_timeout = 30 secs syslog_facility = mail userdb { args auth_verbose = default default_fields driver = passwd name override_fields result_failure = continue result_internalfail = continue result_success = return-ok skip = never } valid_chroot_dirs verbose_proctitle = no verbose_ssl = no version_ignore = no protocol lmtp { mail_plugins = " fts fts_solr sieve" }
Steve Dondley
2021-Apr-29 13:51 UTC
What imap ssl/auth settings work best with MS Outlook?
On 2021-04-29 09:40 AM, Steve Dondley wrote:>> I am using Outlook without any problems what so ever. >> >> It sounds to me like you are setting up Outlook to use port 465. In >> the >> setup screen, set the port to either "25" or "587". I am using "587" >> with "starttls" Your "incoming mail port" will depend on how you have >> Dovecot configured. I use port "143" with "starttls" for Outlook. YMMV >> depending on your configuration. >> >> You might want to consider posting the output of "doveconf -a" and how >> you have Outlook configured. > > To get things working with the client I had to set > "disable_plaintext_auth = no" and have them use port 143. Obviously, > this is not ideal. I could not get 993 working at all with the > client's version of outlook. However, on MS 365, outlook works just > fine. > > It's insane.OK, I had changed "ssl = yes" to "ssl = required" so having "disable_plaintext_auth" is not such a big deal. But I would still love to know why port 993 wasn't working at all for this client.