Magnus Bäck wrote: > On Monday, May 25, 2009 at 23:13 CEST, > Per olof Ljungmark <p...@bsdlabs.com> wrote: > >> Magnus Bäck wrote: >> >>>> May 20 09:59:24 <host> postfix/smtpd[77250]: NOQUEUE: reject: >>>> RCPT from <sender>[IP.HERE]: 550 5.1.1 <f...@address>: Recipient >>>> address rejected: User unknown; from=<from> to=<t...@address> >>>> proto=ESMTP helo=<lap02le> >>> "postconf -n" output, please. And which address class is this? >> It is "relay domain". > > Hmm. Let's see proof of that -- disable the show_user_unknown_table_name > option that you've set and post a new log snippet so we'll see Postfix' > opinion. > > [...]
May 26 08:13:41 terrapin postfix/smtpd[79633]: NOQUEUE: reject: RCPT from sender.server[1.2.3.4]: 550 5.1.1 <recipi...@domain.com>: Recipient address rejected: User unknown in relay recipient table; from=<sen...@domain.com> to=<recipi...@domain.com> proto=ESMTP helo=<sender.server> May 26 08:23:06 terrapin postfix/smtpd[79805]: NOQUEUE: reject: RCPT from sender.server[5.6.7.8]: 550 5.1.1 <recipi...@domain.com>: Recipient address rejected: User unknown in relay recipient table; from=<sen...@domain.com> to=<recipi...@domain.com> proto=ESMTP helo=<sender.server> etc. But I think we're wandering away from the original question anyhow? And if it is wrong that Postfix responds with "user unknown" when the directory is unavailable, what SHOULD it be? "Don't know"? In our view Postfix should not respond with 5xx when it cannot contact the LDAP servers. This is not a fault with Postfix at all, it is us that want to avoid Postfix sending a permanent error when in fact the problem is transient but Postfix cannot possibly know that unless we explicitly tells it. We could, - Shut down the SMTP server until the LDAP connection is restored or - Respond with a transient error or - As others suggested, dump the directory to a local file for better redundancy. If the above is totally wrong just let us know and we will act accordingly. Thanks, -- per
