[Dovecot] LMTP error

[Joseph Tam]

IT geek 31 <itgeek31 at googlemail.com> writes:

> I've recently switched to LMTP as I'm now using mdbox.  However since
> switching, mails sent to the root account do not get delivered due to the
> following error:
>
> May  1 18:20:17 Server1 postfix/lmtp[13019]: CAEE91F851: to=<root at test.com>,
> relay=mail.test.com[private/dovecot-lmtp], delay=1097,
> delays=1096/0.45/0.43/0.46, dsn=4.3.0, status=deferred (host
> mail.test.com[private/dovecot-lmtp]
> said: 451 4.3.0 <root at test.com> Invalid user settings. Refer to server log
> for more information. (in reply to RCPT TO command))

This setting:

> first_valid_uid = 1010

will need to be changed to "0", or better yet, as others have suggested,
alias root to some user with UID within 1010..1020.

The dovecot logs that you ought to see will be something like

 	May  1 16:12:11 viol dovecot: lda: Error: user root: Mail access
 		for users with UID 0 not permitted (see first_valid_uid
 		in config file, uid from userdb lookup).

Joseph Tam <jtam.home at gmail.com>