On Fri, Nov 16, 2012 at 12:47:52PM -0800, Thufir wrote:
I ran dovecot -a and the blizzard of data seemed ok to my limited knowledge. Is there another log I should look into to trace this error down?
It's actually a Postfix problem. Postfix is invoking your Dovecot LDA with wrong permissions.
Dovecot and system info:
thufir@dur:~$ thufir@dur:~$ dovecot --version 2.0.19 thufir@dur:~$ thufir@dur:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS" thufir@dur:~$
testing postfix & dovecot (http://packages.ubuntu.com/precise/dovecot-postfix):
root@dur:/etc/postfix# root@dur:/etc/postfix# telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 dur.bounceme.net ESMTP Postfix (Ubuntu) helo me 250 dur.bounceme.net mail from:foo@bar.com
Angle brackets are required on envelope addresses (and I bet you don't own bar.com):
MAIL FROM:foo@example.com
250 2.1.0 Ok rcpt to:root@dur.bounceme.net
RCPT TO:root@dur.bounceme.net
250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> subject:ping 3 blah blah .
A header must have a space after the colon. Header and body are separated by a blank line. See RFC 5322.
250 2.0.0 Ok: queued as 35EC92A0D72 quit 221 2.0.0 Bye Connection closed by foreign host. root@dur:/etc/postfix# root@dur:/etc/postfix# tail /var/log/mail.log Nov 16 12:30:07 dur postfix/smtpd[4113]: connect from localhost[127.0.0.1] Nov 16 12:30:40 dur postfix/smtpd[4113]: 35EC92A0D72: client=localhost[127.0.0.1] Nov 16 12:30:52 dur postfix/cleanup[4133]: 35EC92A0D72: message-id=20121116203040.35EC92A0D72@dur.bounceme.net Nov 16 12:30:52 dur postfix/qmgr[1681]: 35EC92A0D72: from=foo@bar.com, size=321, nrcpt=1 (queue active) Nov 16 12:30:52 dur dovecot: lda(root): Error: chdir(/root/) failed: Permission denied (euid=65534(nobody) egid=65534(nogroup) missing +x perm: /root, dir owned by 0:0 mode=0700)
The fix to this is simply not to deliver mail to root. You should have aliased root to a mortal user. Postfix will not invoke a mailbox_command as root.
In broader terms, you should only use root for actual system administration, and not for user tasks such as reading and sending mail.
See and edit /etc/aliases, then run "newaliases". Example:
root: thufir
http://www.postfix.org/postconf.5.html#default_privs http://www.postfix.org/postconf.5.html#mailbox_command http://www.postfix.org/local.8.html http://www.postfix.org/aliases.5.html
After you have done this, requeue the message:
# postsuper -r 35EC92A0D72
(or just delete it, s/-r/-d/, and try another test.)
http://www.postfix.org/postsuper.1.html
Nov 16 12:30:52 dur dovecot: lda(root): Error: chdir(/root) failed: Permission denied Nov 16 12:30:52 dur dovecot: lda(root): Error: user root: Initialization failed: Initializing mail storage from mail_location setting failed: stat(/root/Maildir) failed: Permission denied (euid=65534(nobody) egid=65534(nogroup) missing +x perm: /root, dir owned by 0:0 mode=0700) Nov 16 12:30:52 dur dovecot: lda(root): Fatal: Invalid user settings. Refer to server log for more information. Nov 16 12:30:52 dur postfix/local[4134]: 35EC92A0D72: to=root@dur.bounceme.net, relay=local, delay=25, delays=25/0.02/0/0.12, dsn=4.3.0, status=deferred (temporary failure) Nov 16 12:30:56 dur postfix/smtpd[4113]: disconnect from localhost[127.0.0.1] root@dur:/etc/postfix#
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