Scott A. Wozny
2020-Jun-03 23:51 UTC
Cannot log in to IMAP server and logs are unclear as to why
I?m trying a super basic config based upon https://wiki.dovecot.org/HowTo/PostfixDovecotLMTP but before I work on shipping mail through Postfix to DoveCot, I wanted to make sure IMAP is working first, but I can?t even get a basic login to so I thought I?d see if the gurus on the list might be able to point out I?m doing wrong. The documentation is pretty good, but there were some gaps I had to guess at and I?m presuming that?s where I went wrong. I?ve turned SELinux to permissive mode, for now. Here?s the doveconf -n: # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf # OS: Linux 3.10.0-1062.12.1.el7.x86_64 x86_64 CentOS Linux release 7.7.1908 (Core) # Hostname: imap first_valid_uid = 1000 listen = 192.168.1.207 mail_gid = vmail mail_home = /var/vmail/%d/%n mail_location = sdbox:~/mail mail_uid = vmail mbox_write_locks = fcntl 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 = / } passdb { args = scheme=PLAIN username_format=%u /etc/dovecot/users driver = passwd-file } protocols = imap lmtp service lmtp { group = vmail unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } user = vmail } ssl = no ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = # hidden, use -P to show it userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } I wasn?t sure how to set rights on the users file: [sawozny at imap var]$ cat /etc/dovecot/users test at test.com:{plain}test [sawozny at imap var]$ ls -la /etc/dovecot/users -rw-r--r--. 1 root root 26 Jun 3 23:31 /etc/dovecot/users Also, didn?t know what rights to set on the /var/vmail directoy so I did this: drwxrwx---. 3 vmail vmail 4096 Jun 3 20:52 vmail This directory is also empty except for the lost+fond directory that comes with a disk mount point. My understanding is that the mail home and maildir will manifest automagically on first login, but if I need to prime the pump, please let me know what I need to do. For my test, I did: [sawozny at imap var]$ telnet 192.168.1.207 143 Trying 192.168.1.207... Connected to 192.168.1.207. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. 01 LOGIN test at test.com test 01 NO [UNAVAILABLE] Internal error occurred. Refer to server log for more information. Connection closed by foreign host. And the results in the /var/log/maillog file are: Jun 3 23:35:34 imap dovecot: auth: Error: passwd-file /etc/dovecot/users: User test at test.com is missing userdb info Jun 3 23:35:44 imap dovecot: auth: Error: passwd-file(test at test.com,192.168.1.207,<DBqafDan7ODAqAHP>): user not found from userdb Jun 3 23:35:44 imap dovecot: imap: Error: Authenticated user not found from userdb, auth lookup id=843055105 (auth connected 0 msecs ago, handshake 0 msecs ago, request took 0 msecs, client-pid=12047 client-id=1) Jun 3 23:35:44 imap dovecot: imap-login: Internal login failure (pid=12047 id=1) (internal failure, 1 successful auths): user=<test at test.com>, method=PLAIN, rip=192.168.1.207, lip=192.168.1.207, mpid=12049, secured, session=<DBqafDan7ODAqAHP> I?m not sure where I?ve gone wrong. From my understanding of the documentation, all I need in the userdb is name and password. UID, GID and HOME are also indicated as required, but I set them at the system level, so why is the system telling me the user was not found? This definitely isn?t my first rodeo with Linux, but I know almost nothing about messaging so in that regard I?m a totally n00b and would really appreciate some guidance. Thanks, Scott -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20200603/4a4bed29/attachment.html>
Aki Tuomi
2020-Jun-04 07:14 UTC
Cannot log in to IMAP server and logs are unclear as to why
> On 04/06/2020 02:51 Scott A. Wozny <sawozny at hotmail.com> wrote: > > > I?m trying a super basic config based upon https://wiki.dovecot.org/HowTo/PostfixDovecotLMTP but before I work on shipping mail through Postfix to DoveCot, I wanted to make sure IMAP is working first, but I can?t even get a basic login to so I thought I?d see if the gurus on the list might be able to point out I?m doing wrong. The documentation is pretty good, but there were some gaps I had to guess at and I?m presuming that?s where I went wrong. I?ve turned SELinux to permissive mode, for now. > > > Here?s the doveconf -n: > > > # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf<snip/> auth_username_format = %Ln should fix your problem. alternatively you need to change /etc/dovecot/users to have test at test.com:.... instead of test:.... and log in always with full username. Aki
Scott A. Wozny
2020-Jun-04 23:31 UTC
Cannot log in to IMAP server and logs are unclear as to why
Hi Aki, Thanks for the response. I'm, unfortunately, a little confused. This is the only line in /etc/dovecot/users: test at test.com:{plain}test Which matches your suggestion to use the full smtp address as the username and log in with it, which I did for my test. Can you specify what it was you thought I should try differently? Regardless, I see your point about trying a less complex username. In the end, I want to host 3 small domains on one server which looks well within Dovecot's capability, but I'll try taking the use of the domain name out of the equation for now to try and narrow down / correct the errors. Thanks, Scott ________________________________ From: Aki Tuomi <aki.tuomi at open-xchange.com> Sent: June 4, 2020 3:14 AM To: Scott A. Wozny <sawozny at hotmail.com>; dovecot at dovecot.org <dovecot at dovecot.org> Subject: Re: Cannot log in to IMAP server and logs are unclear as to why> On 04/06/2020 02:51 Scott A. Wozny <sawozny at hotmail.com> wrote: > > > I?m trying a super basic config based upon https://wiki.dovecot.org/HowTo/PostfixDovecotLMTP but before I work on shipping mail through Postfix to DoveCot, I wanted to make sure IMAP is working first, but I can?t even get a basic login to so I thought I?d see if the gurus on the list might be able to point out I?m doing wrong. The documentation is pretty good, but there were some gaps I had to guess at and I?m presuming that?s where I went wrong. I?ve turned SELinux to permissive mode, for now. > > > Here?s the doveconf -n: > > > # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf<snip/> auth_username_format = %Ln should fix your problem. alternatively you need to change /etc/dovecot/users to have test at test.com:.... instead of test:.... and log in always with full username. Aki -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20200604/3765b389/attachment.html>
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