Hi, Sorry, the problem is back! Not solved, again no change except that I lowered the limits again and restarted dovecot. Here is what it looks like: lsof -a -i4 -i6 -itcp | fgrep imap-logi | wc 9 --> There are 9 TCP connections to imap-login. ps aux | fgrep imap-login | wc 81 ps aux | fgrep imap | wc 90 --> There are 90-81 = 9 IMAP worker processes (OK) and 81 imap-login processes (not OK). Thunderbird cannot connect again. ps auxf | fgrep dove root 28118 0.0 0.0 4200 2752 ? Ss Feb03 0:02 /usr/sbin/dovecot -F dovecot 28138 0.0 0.0 4176 2224 ? S Feb03 0:01 \_ dovecot/anvil root 28139 0.0 0.0 4172 2436 ? S Feb03 0:00 \_ dovecot/log root 28140 0.0 0.0 6764 4636 ? S Feb03 0:05 \_ dovecot/config dovecot 28143 0.0 0.0 5360 3584 ? S Feb03 0:01 \_ dovecot/stats dovenull 28206 0.0 0.0 8200 4652 ? S Feb03 0:02 \_ dovecot/imap-login USER2 28207 0.0 0.0 6356 3988 ? S Feb03 0:02 \_ dovecot/imap dovenull 28234 0.0 0.0 8200 4712 ? S Feb03 0:02 \_ dovecot/imap-login USER1 28235 0.0 0.0 6356 2924 ? S Feb03 0:02 \_ dovecot/imap dovenull 28275 0.0 0.0 8200 4716 ? S Feb03 0:02 \_ dovecot/imap-login USER1 28276 0.0 0.0 9416 7308 ? S Feb03 0:03 \_ dovecot/imap dovenull 19673 0.0 0.0 8212 6380 ? S Feb04 0:00 \_ dovecot/imap-login USER3 19674 0.0 0.0 14220 7680 ? S Feb04 0:01 \_ dovecot/imap dovenull 21688 0.0 0.0 8200 6416 ? S Feb04 0:01 \_ dovecot/imap-login USER2 21690 0.0 0.0 9604 8504 ? S Feb04 0:01 \_ dovecot/imap dovenull 22398 0.0 0.0 8200 6440 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 22400 0.0 0.0 8200 6384 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 22593 0.0 0.0 8200 6292 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 22595 0.0 0.0 8200 6312 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 22814 0.0 0.0 8200 6324 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 22816 0.0 0.0 8200 6312 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23026 0.0 0.0 8200 6384 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23028 0.0 0.0 8200 6340 ? S Feb04 0:00 \_ dovecot/imap-login .......(skipped some lines of imap-login)........ dovenull 23179 0.0 0.0 8200 6412 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23181 0.0 0.0 8200 6368 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23421 0.0 0.0 8200 6284 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23423 0.0 0.0 8200 6412 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23611 0.0 0.0 8200 6380 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23613 0.0 0.0 8200 6296 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23797 0.0 0.0 8200 6464 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 23799 0.0 0.0 8200 6296 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 24029 0.0 0.0 8200 6300 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 24031 0.0 0.0 8200 6188 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 24205 0.0 0.0 8200 6340 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 24207 0.0 0.0 8200 6320 ? S Feb04 0:00 \_ dovecot/imap-login dovenull 5628 0.0 0.0 8212 6408 ? S 08:59 0:00 \_ dovecot/imap-login USER1 5629 0.0 0.0 7844 6460 ? S 08:59 0:00 \_ dovecot/imap optores 5630 0.0 0.0 6356 4444 ? S 08:59 0:00 \_ dovecot/imap USER1 5631 0.0 0.0 6372 4568 ? S 08:59 0:00 \_ dovecot/imap dovenull 6373 0.0 0.0 8200 6224 ? S 09:43 0:00 \_ dovecot/imap-login USER1 6375 0.0 0.0 7052 5900 ? S 09:43 0:00 \_ dovecot/imap The config is the same as last time except for this: auth_worker_max_count = 100 default_process_limit = 80 Which should be more than enough. Any ideas? Wolfgang On 2/3/21 8:19 PM, Wolfgang wrote:> Hi, > >> But as Aki said, doveconf -n is crucial, especially since you upgraded > from an older version. >> > > Thank you for your response. Unfortunately, I missed the first e-mail a > few days ago. > > Interestingly it does no longer happen since a few days. We're seeing > one IMAP and one IMAP-LOGIN process per connection now which is the > expected behavior. > > It's completely unclear to me why this does not longer happen now. > > Anyway, here's the doveconf output in case you spot something. > > Thank you, > Wolfgang > > # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.4 () > # OS: Linux 4.19.0-11-amd64 x86_64 Debian 10.7 > # Hostname: static...... > auth_mechanisms = scram-sha-1 digest-md5 cram-md5 plain > auth_worker_max_count = 300 > default_process_limit = 200 > first_valid_uid = 1000 > hostname = ....... > log_timestamp = "%Y-%m-%d %H:%M:%S " > mail_location = maildir:~/Maildir > mail_plugins = quota acl > mail_privileged_group = mail > mail_server_admin = postmaster at ....... > 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 editheader > namespace inbox { > inbox = yes > location > mailbox Drafts { > special_use = \Drafts > } > mailbox Junk { > special_use = \Junk > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent Messages" { > special_use = \Sent > } > mailbox Trash { > special_use = \Trash > } > prefix > separator = / > type = private > } > namespace zzzzz { > list = children > location = maildir:%%h/Maildir-xxx:INDEX=~/index_shared/%%u > prefix = shared/%%u/ > separator = / > subscriptions = no > type = shared > } > passdb { > args = /etc/dovecot/shadow > driver = passwd-file > } > plugin { > acl = vfile > acl_shared_dict = file:/var/mail/shared-%d/shared-mailboxes > quota = maildir:User quota > quota_rule = *:storage=1G > quota_warning = storage=90%% quota-warning 90 %u > sieve = file:~/sieve;active=~/dovecot.sieve > sieve_extensions = +editheader > } > postmaster_address = postmaster at xxxxxxx.de > protocols = " imap sieve sieve" > service auth-worker { > chroot = yes > user = $default_internal_user > } > service auth { > unix_listener /var/spool/postfix/private/auth { > group = postfix > mode = 0660 > user = postfix > } > } > service imap-login { > vsz_limit = 64 M > } > service managesieve-login { > inet_listener sieve { > port = 4190 > } > inet_listener sieve_deprecated { > port = 2000 > } > } > ssl_cert = </etc/letsencrypt/live/..../fullchain.pem > ssl_client_ca_dir = /etc/ssl/certs > ssl_dh = # hidden, use -P to show it > ssl_key = # hidden, use -P to show it > userdb { > args = /etc/dovecot/passwd > default_fields = quota_rule=*:storage=1G > driver = passwd-file > } > protocol lda { > mail_plugins = quota acl sieve > } > protocol imap { > mail_max_userip_connections = 32 > mail_plugins = quota acl imap_quota imap_acl > } >
Can you set verbose_proctitle = yes this should provide more information what the process is up to. Can you also check your logs? Aki> On 05/02/2021 11:46 Wolfgang <adminkram at tripelspark.de> wrote: > > > Hi, > > Sorry, the problem is back! Not solved, again no change except that I > lowered the limits again and restarted dovecot. Here is what it looks like: > > lsof -a -i4 -i6 -itcp | fgrep imap-logi | wc > 9 > > --> There are 9 TCP connections to imap-login. > > ps aux | fgrep imap-login | wc > 81 > ps aux | fgrep imap | wc > 90 > > --> There are 90-81 = 9 IMAP worker processes (OK) and 81 imap-login > processes (not OK). Thunderbird cannot connect again. > > ps auxf | fgrep dove > root 28118 0.0 0.0 4200 2752 ? Ss Feb03 0:02 > /usr/sbin/dovecot -F > dovecot 28138 0.0 0.0 4176 2224 ? S Feb03 0:01 \_ > dovecot/anvil > root 28139 0.0 0.0 4172 2436 ? S Feb03 0:00 \_ > dovecot/log > root 28140 0.0 0.0 6764 4636 ? S Feb03 0:05 \_ > dovecot/config > dovecot 28143 0.0 0.0 5360 3584 ? S Feb03 0:01 \_ > dovecot/stats > dovenull 28206 0.0 0.0 8200 4652 ? S Feb03 0:02 \_ > dovecot/imap-login > USER2 28207 0.0 0.0 6356 3988 ? S Feb03 0:02 \_ > dovecot/imap > dovenull 28234 0.0 0.0 8200 4712 ? S Feb03 0:02 \_ > dovecot/imap-login > USER1 28235 0.0 0.0 6356 2924 ? S Feb03 0:02 \_ > dovecot/imap > dovenull 28275 0.0 0.0 8200 4716 ? S Feb03 0:02 \_ > dovecot/imap-login > USER1 28276 0.0 0.0 9416 7308 ? S Feb03 0:03 \_ > dovecot/imap > dovenull 19673 0.0 0.0 8212 6380 ? S Feb04 0:00 \_ > dovecot/imap-login > USER3 19674 0.0 0.0 14220 7680 ? S Feb04 0:01 \_ > dovecot/imap > dovenull 21688 0.0 0.0 8200 6416 ? S Feb04 0:01 \_ > dovecot/imap-login > USER2 21690 0.0 0.0 9604 8504 ? S Feb04 0:01 \_ > dovecot/imap > dovenull 22398 0.0 0.0 8200 6440 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 22400 0.0 0.0 8200 6384 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 22593 0.0 0.0 8200 6292 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 22595 0.0 0.0 8200 6312 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 22814 0.0 0.0 8200 6324 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 22816 0.0 0.0 8200 6312 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23026 0.0 0.0 8200 6384 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23028 0.0 0.0 8200 6340 ? S Feb04 0:00 \_ > dovecot/imap-login > .......(skipped some lines of imap-login)........ > dovenull 23179 0.0 0.0 8200 6412 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23181 0.0 0.0 8200 6368 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23421 0.0 0.0 8200 6284 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23423 0.0 0.0 8200 6412 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23611 0.0 0.0 8200 6380 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23613 0.0 0.0 8200 6296 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23797 0.0 0.0 8200 6464 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 23799 0.0 0.0 8200 6296 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 24029 0.0 0.0 8200 6300 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 24031 0.0 0.0 8200 6188 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 24205 0.0 0.0 8200 6340 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 24207 0.0 0.0 8200 6320 ? S Feb04 0:00 \_ > dovecot/imap-login > dovenull 5628 0.0 0.0 8212 6408 ? S 08:59 0:00 \_ > dovecot/imap-login > USER1 5629 0.0 0.0 7844 6460 ? S 08:59 0:00 \_ > dovecot/imap > optores 5630 0.0 0.0 6356 4444 ? S 08:59 0:00 \_ > dovecot/imap > USER1 5631 0.0 0.0 6372 4568 ? S 08:59 0:00 \_ > dovecot/imap > dovenull 6373 0.0 0.0 8200 6224 ? S 09:43 0:00 \_ > dovecot/imap-login > USER1 6375 0.0 0.0 7052 5900 ? S 09:43 0:00 \_ > dovecot/imap > > The config is the same as last time except for this: > > auth_worker_max_count = 100 > default_process_limit = 80 > > Which should be more than enough. > > Any ideas? > Wolfgang > > On 2/3/21 8:19 PM, Wolfgang wrote: > > Hi, > > > >> But as Aki said, doveconf -n is crucial, especially since you upgraded > > from an older version. > >> > > > > Thank you for your response. Unfortunately, I missed the first e-mail a > > few days ago. > > > > Interestingly it does no longer happen since a few days. We're seeing > > one IMAP and one IMAP-LOGIN process per connection now which is the > > expected behavior. > > > > It's completely unclear to me why this does not longer happen now. > > > > Anyway, here's the doveconf output in case you spot something. > > > > Thank you, > > Wolfgang > > > > # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf > > # Pigeonhole version 0.5.4 () > > # OS: Linux 4.19.0-11-amd64 x86_64 Debian 10.7 > > # Hostname: static...... > > auth_mechanisms = scram-sha-1 digest-md5 cram-md5 plain > > auth_worker_max_count = 300 > > default_process_limit = 200 > > first_valid_uid = 1000 > > hostname = ....... > > log_timestamp = "%Y-%m-%d %H:%M:%S " > > mail_location = maildir:~/Maildir > > mail_plugins = quota acl > > mail_privileged_group = mail > > mail_server_admin = postmaster at ....... > > 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 editheader > > namespace inbox { > > inbox = yes > > location > > mailbox Drafts { > > special_use = \Drafts > > } > > mailbox Junk { > > special_use = \Junk > > } > > mailbox Sent { > > special_use = \Sent > > } > > mailbox "Sent Messages" { > > special_use = \Sent > > } > > mailbox Trash { > > special_use = \Trash > > } > > prefix > > separator = / > > type = private > > } > > namespace zzzzz { > > list = children > > location = maildir:%%h/Maildir-xxx:INDEX=~/index_shared/%%u > > prefix = shared/%%u/ > > separator = / > > subscriptions = no > > type = shared > > } > > passdb { > > args = /etc/dovecot/shadow > > driver = passwd-file > > } > > plugin { > > acl = vfile > > acl_shared_dict = file:/var/mail/shared-%d/shared-mailboxes > > quota = maildir:User quota > > quota_rule = *:storage=1G > > quota_warning = storage=90%% quota-warning 90 %u > > sieve = file:~/sieve;active=~/dovecot.sieve > > sieve_extensions = +editheader > > } > > postmaster_address = postmaster at xxxxxxx.de > > protocols = " imap sieve sieve" > > service auth-worker { > > chroot = yes > > user = $default_internal_user > > } > > service auth { > > unix_listener /var/spool/postfix/private/auth { > > group = postfix > > mode = 0660 > > user = postfix > > } > > } > > service imap-login { > > vsz_limit = 64 M > > } > > service managesieve-login { > > inet_listener sieve { > > port = 4190 > > } > > inet_listener sieve_deprecated { > > port = 2000 > > } > > } > > ssl_cert = </etc/letsencrypt/live/..../fullchain.pem > > ssl_client_ca_dir = /etc/ssl/certs > > ssl_dh = # hidden, use -P to show it > > ssl_key = # hidden, use -P to show it > > userdb { > > args = /etc/dovecot/passwd > > default_fields = quota_rule=*:storage=1G > > driver = passwd-file > > } > > protocol lda { > > mail_plugins = quota acl sieve > > } > > protocol imap { > > mail_max_userip_connections = 32 > > mail_plugins = quota acl imap_quota imap_acl > > } > >