Dovecot LMTP tries to access a directory of a different user, than the one it actually changed to.
Steffen Kaiser
skdovecot at smail.inf.fh-brs.de
Fri Jul 3 13:09:07 UTC 2015
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On Fri, 3 Jul 2015, Ernest Deak wrote:
> Hello, I encountered a problem when trying to send an email to multiple
> recipients.
> Jul 3 12:34:57 dhcp90 dovecot: lmtp(24106, tester): Error:
> stat(/home/han.solo/mail/.imap/INBOX/dovecot.index.log) failed: Permission
> denied (euid=802(tester) egid=800(kerber) missing +x perm: /home/han.solo,
> euid is not dir owner)
> Jul 3 12:34:57 dhcp90 dovecot: lmtp(24106, tester): Error:
> open(/home/han.solo/mail/.imap/INBOX/dovecot.index) failed: Permission denied
> (euid=802(tester) egid=800(kerber) missing +x perm: /home/han.solo, euid is
> not dir owner)
> Jul 3 12:34:57 dhcp90 dovecot: lmtp(24106, tester): 70NxN1FlllUqXgAA0vrzwA:
> msgid=<55966551.IfKOMu/T0WTB9M5x%vader at dhcp90.#####>: save failed to
> INBOX: BUG: Unknown internal error
> My MTA is sendmail
> I am using dovecot-lmtp for local delivery
> Mailbox format is mbox
> Configured managesieve plugin to listen on 4190. (not sure if this is even
> related but it might)
>
> The problem I see is that lmtp(user1) tries to access the home directory
> /home/user2 and I cannot figure out the reason why.
> This only happens when sending mails to multiple recipients.
> I see the that lmtp complains that it doesn't have execute permissions. But I
> don't want to place execute permissions for others on the entire /home/* dir
> structure.
as far as I remember there had been (or is) a bug in Dovecot, that
privilegues are not changed correctly when delivering to another user. If
that's the case, limit the number of recipients per LMTP message to 1, see
r= field in mailer definition in op.me.
- --
Steffen Kaiser
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