On 28/05/2021 06:43, Aki Tuomi wrote:
On 27/05/2021 22:24 Jeff Abrahamson jeff@p27.eu wrote:
I've started seeing the following error in mail.err for precisely one user on precisely one domain:
Error: mkdir(/var/mail/vmail//jeff/mail) failed: Permission denied (euid=1000(jeff) egid=1001(jeff) missing +w perm: /var/mail/vmail/, dir owned by 4000:4000 mode=0755) Error: Mailbox INBOX: Failed to autocreate mailbox: Internal error occurred. In mail.log I see a bit more: Warning: Failed to parse address from `From_'-line: Missing domain Error: mkdir(/var/mail/vmail//jeff/mail) failed: Permission denied (euid=1000(jeff) egid=1001(jeff) missing +w perm: /var/mail/vmail/, dir owned by 4000:4000 mode=0755) Error: mkdir(/var/mail/vmail//jeff/mail) failed: Permission denied (euid=1000(jeff) egid=1001(jeff) missing +w perm: /var/mail/vmail/, dir owned by 4000:4000 mode=0755) Error: Mailbox INBOX: Failed to autocreate mailbox: Internal error occurred. Refer to server log for more information. save failed to open mailbox INBOX: Mailbox INBOX: Failed to autocreate mailbox: Internal error occurred.
And yet there's no apparent problem sending and receiving mail for user jeff, for all domains handled by the server. Other users have no issues. The /var/mail/vmail/ hierarchy is all owned by vmail:vmail (4000:4000) and directories are all 0755. I suspect a red herring except it's been continuing for a week now. I was reading this page (following some searching), but it doesn't seem pertinent in the end.
https://wiki2.dovecot.org/MailLocation/mbox#A.2BAC8-var.2BAC8-mail.2BAC8_dot...
Any suggestions what this might be?
This indicates your mail process is being ran as jeff:jeff instead of vmail:vmail.
Can you try
doveadm auth test yourusernameanddoveadm user yourusernameto ensure you are not ending up with uid=jeff gid=jeff somehow?
User jeff (which shouldn't happen but is indicated by the empty From_ message) or jeff@p27.eu (user which manifestly exists and works):
[T] jeff@nantes-m1:~ $ doveadm auth test jeff
doveadm(jeff): Error:
net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission
denied
Password:
Error: auth-client: conn unix:/var/run/dovecot/auth-client:
connect(/var/run/dovecot/auth-client) failed: Permission denied
(euid=1000(jeff) egid=1001(jeff) missing +r perm:
/var/run/dovecot/auth-client, dir owned by 0:0 mode=0755)
77,[T] jeff@nantes-m1:~ $ doveadm auth test jeff@p27.eu
doveadm(jeff): Error:
net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission
denied
Password:
Error: auth-client: conn unix:/var/run/dovecot/auth-client:
connect(/var/run/dovecot/auth-client) failed: Permission denied
(euid=1000(jeff) egid=1001(jeff) missing +r perm:
/var/run/dovecot/auth-client, dir owned by 0:0 mode=0755)
77,[T] jeff@nantes-m1:~ $ sudo doveadm auth test jeff
Password:
passdb: jeff auth failed
extra fields:
user=jeff
77,[T] jeff@nantes-m1:~ $ sudo doveadm auth test jeff@p27.eu
Password:
passdb: jeff@p27.eu auth failed
extra fields:
user=jeff@p27.eu
77,[T] jeff@nantes-m1:~ $
77,[T] jeff@nantes-m1:~ $ doveadm user jeff
doveadm(jeff): Error:
net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission
denied
field value
userdb lookup: user jeff doesn't exist
67,[T] jeff@nantes-m1:~ $ doveadm user jeff@p27.eu
doveadm(jeff): Error:
net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission
denied
field valuedoveadm(jeff@p27.eu)<1640907><>: Error: auth-master:
userdb lookup(jeff@p27.eu): Auth USER lookup failed
75,[T] jeff@nantes-m1:~ $ sudo doveadm user jeff@p27.eu
[sudo] password for jeff:
field value
uid 4000
gid 4000
home /var/mail/vmail/p27.eu/jeff
mail maildir:/var/mail/vmail/p27.eu/jeff/mail:LAYOUT=fs
[T] jeff@nantes-m1:~ $ sudo doveadm user jeff
field value
userdb lookup: user jeff doesn't exist
67,[T] jeff@nantes-m1:postfix $Dovecot processes:
[T] jeff@nantes-m1:~ $ ps axfu | grep dove | grep -v grep
root 1576672 0.0 0.2 4536 2788 ? Ss May23 0:02
/usr/sbin/dovecot -F
dovecot 1576683 0.0 0.1 4380 2008 ? S May23 0:01
\_ dovecot/anvil
root 1576684 0.0 0.1 4388 1896 ? S May23 0:00
\_ dovecot/log
root 1576685 0.0 0.4 5856 4172 ? S May23 0:02
\_ dovecot/config
dovecot 1576699 0.0 0.3 5036 3084 ? S May23 0:01
\_ dovecot/stats
dovenull 1576804 0.0 0.4 8472 4288 ? S May23 0:02
\_ dovecot/imap-login
vmail 1576805 0.0 0.4 7212 4572 ? S May23 0:03
\_ dovecot/imap
dovecot 1637614 0.0 0.5 9508 5756 ? S 04:58 0:00
\_ dovecot/auth
dovenull 1638957 0.0 0.6 8472 6664 ? S 06:19 0:00
\_ dovecot/imap-login
vmail 1638958 0.0 0.5 9580 5612 ? S 06:19 0:00
\_ dovecot/imap
dovenull 1640541 0.0 0.6 8472 6660 ? S 06:39 0:00
\_ dovecot/imap-login
vmail 1640542 0.0 0.4 6136 4584 ? S 06:39 0:00
\_ dovecot/imap
dovenull 1640591 0.0 0.6 8472 6656 ? S 06:44 0:00
\_ dovecot/imap-login
dovenull 1640592 0.0 0.6 8472 6580 ? S 06:44 0:00
\_ dovecot/imap-login
vmail 1640593 0.0 0.6 14732 7000 ? S 06:44 0:00
\_ dovecot/imap
vmail 1640594 0.0 0.5 6952 5504 ? S 06:44 0:00
\_ dovecot/imap
dovenull 1640599 0.0 0.6 8472 6676 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640600 0.0 0.5 7092 5764 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640601 0.0 0.6 8472 6680 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640602 0.0 0.5 6460 5168 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640607 0.0 0.6 8472 6544 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640608 0.0 0.4 6444 4980 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640609 0.0 0.6 8472 6764 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640610 0.0 0.5 7072 5900 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640613 0.0 0.6 8472 6620 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640614 0.0 0.5 6460 5312 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640615 0.0 0.6 8472 6716 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640616 0.0 0.5 6444 5080 ? S 06:45 0:00
\_ dovecot/imap
dovenull 1640617 0.0 0.6 8472 6752 ? S 06:45 0:00
\_ dovecot/imap-login
vmail 1640618 0.0 0.5 7864 5512 ? S 06:45 0:00
\_ dovecot/imap
[T] jeff@nantes-m1:~ $On a hunch based on your suggested test, I installed mailx and did the following two tests. The first triggers the error message, the second does not:
[T] jeff@nantes-m1:~ $ echo test | mailx -s 'test 1' jeff
[T] jeff@nantes-m1:~ $ echo test | mailx -s 'test 1' jeff@p27.euThis suggests to me that some cron job was trying to mail me and failing to get its mail delivered.
So one fix (but maybe not the correct fix) is to add this line to /etc/postfix/virtual (despite the error coming from dovecot):
jeff jeff@p27.eu--
Jeff Abrahamson +33 6 24 40 01 57 +44 7920 594 255