From: aio shin (aioshingmail.com)
Date: Mon Sep 17 2007 - 15:52:54 CDT

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I'm getting my password file thru the ldap local service, which is via
pam. Im not getting something like this on my previous box, Its just
recently when I changed the machine to a higher specs ( which could
not be the factor). Anyway, Im running centos 4.5 on it, while on my
previous box, its centos 4.4. so, I might need to update the postfix
if available.. I'll post if updating will fix it.

Thanks!...

On 9/18/07, Wietse Venema <wietseporcupine.org> wrote:
> aio shin:
> > Helo postfix users,
> >
> > I dont understand, its getting wierd, I have set the
> > unknown_local_recipient_reject_code = 450 but still I got unknown user
> > error from those legit users on my mail server. I observed that it
> > usually happened when someone send an email to our distribution group
> > which the usual number of members that should be local recipient goes
> > to 200 or more.
>
> Are you using the UNIX password file for local users, or are you
> using something that involves LDAP, SQL or some other database
> service?
>
> It is possible that these report false "user unknown" under conditions
> of high load. Usually the bug is that the system library incorrectly
> reports failed database access as "user not found".
>
> Wietse
>
> > Now I'd setup the local recipient map to blank and
> > luser_relay being set to one local user.
> >
> > What could be the other parameters that I should check? if I will
> > upgrade postfix, is there a possibility that it could be fix? Im
> > currently running postfix-2.2.10-1.1(el4)
> >
> >
> > On 9/15/07, aio shin <aioshingmail.com> wrote:
> > > Wow, I thought below solves the problem, but still got same errors.,
> > > now what I did was, I changed the parameter
> > > unknown_local_recipient_reject_code = 450 from its default value to
> > > 550.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > > I may have found the source of the problem, my
> > > >
> > > > local_recipient_maps = unix:passwd.byname $alias_maps
> > > >
> > > >
> > > > and the host (mail) uses ldap as authentication. We have several ldap
> > > > servers, the main is remote, then I also have a local ldap database
> > > > constantly replicating on the main ldap server, but I left it to look
> > > > on the remote server due to some circumstances. I just thought, maybe
> > > > during the looking up of the local recipient maps, the ldap timed-out
> > > > which might be the cause that it declares certain users on that
> > > > certain time to be unknown. Anyway, I still have to observe this, but
> > > > this is now my primary suspect.
> > > >
> > > >
> > > > On 9/12/07, aio shin <aioshingmail.com> wrote:
> > > > > Sorry, I only understand english..
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On 9/12/07, postmasterterralink.it <postmasterterralink.it> wrote:
> > > > > > Notifica sullo stato del recapito generata automaticamente.
> > > > > >
> > > > > > QUESTO +AMg- SOLO UN MESSAGGIO DI AVVISO.
> > > > > >
> > > > > > NON +AMg- NECESSARIO INVIARE NUOVAMENTE IL MESSAGGIO.
> > > > > >
> > > > > > Recapito ritardato per i seguenti destinatari.
> > > > > >
> > > > > > davide.ambrosiTERRALINK.IT
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Final-Recipient: rfc822;davide.ambrosiTERRALINK.IT
> > > > > > Action: delayed
> > > > > > Status: 4.4.7
> > > > > > Will-Retry-Until: Sun, 16 Sep 2007 05:09:00 +0200
> > > > > > X-Display-Name: Davide Ambrosi
> > > > > >
> > > > > >
> > > > > >
> > > > > > ---------- Forwarded message ----------
> > > > > > From: "aio shin" <aioshingmail.com>
> > > > > > To: postfix-userspostfix.org
> > > > > > Date: Wed, 12 Sep 2007 11:07:14 +0800
> > > > > > Subject: Re: undelivered mail problem
> > > > > > I still got one instance of undelivered mail problem after changing my
> > > > > > virtual alias maps. The same problem, it declared the user still as
> > > > > > unknown, though already add a localhost at the last part of the user.
> > > > > >
> > > > > > I did not forgot to restart postfix and already re-run postmap on virtual file
> > > > > >
> > > > > >
> > > > > > #/etc/postfix/virtual
> > > > > > giovanni.claveriamydomain.com giovanni.claverialocalhost
> > > > > > giovanni.claveriamail.mydomain.com giovanni.claverialocalhost
> > > > > >
> > > > > > and my mydestination entry at main.cf is
> > > > > > mydestination = $myhostname, localhost.$mydomain, localhost
> > > > > >
> > > > > >
> > > > > > and is there a significant on my /etc/hosts file, here' s the entries.
> > > > > >
> > > > > > 127.0.0.1 localhost.localdomain localhost
> > > > > > 192.168.100.254 mail.mydomain.com mail #this is my eth0
> > > > > >
> > > > > >
> > > > > > or should I append mail.mydomain.com beside localhost?
> > > > > >
> > > > > > TIA
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On 9/12/07, aio shin <aioshingmail.com> wrote:
> > > > > > > On 9/11/07, Noel Jones <njonesmegan.vbhcs.org> wrote:
> > > > > > > > On Mon, Sep 10, 2007 at 05:24:43PM -0800, aio shin wrote:
> > > > > > > > > hi list
> > > > > > > > >
> > > > > > > > > I have this undelivered mail bounce message.. I just change the original to
> > > > > > > > > mydomain for posting here.
> > > > > > > > >
> > > > > > > > > *Final-Recipient: rfc822;
> > > > > > > > > **giovanni.claveriamail.mydomain.com*<giovanni.claveriamail.mydomain.com>
> > > > > > > > > *Action: failed
> > > > > > > > > Status: 5.0.0
> > > > > > > > > Diagnostic-Code: X-Postfix; unknown user: "giovanni.claveria"*
> > > > > > > > >
> > > > > > > > > Now, am not sure, why the user became unknown., the user has entry at
> > > > > > > > > virtual alias map file, say
> > > > > > > > > /etc/postfix/virtual contains below:
> > > > > > > > >
> > > > > > > > > *giovanni.claveriamail.mydomain.com* <giovanni.claveriamail.mydomain.com>
> > > > > > > > > *giovanni.claveria *
> > > > > > > > > #this entry will deliver the messages to giovanni locally, on the said host.
> > > > > > > > >
> > > > > > > > > The problem happened randomly, because it normally delivers on its mailbox,
> > > > > > > > > there should no problem at all, but at random time, it just happens, some
> > > > > > > > > users becomes unknown for a random time then it goes back to normal again.
> > > > > > > > >
> > > > > > > > > Any idea how I should fix this.?
> > > > > > > > >
> > > > > > > > > Thanks so much in advance.
> > > > > > > >
> > > > > > > > Your mail is hard to read due to mangling by gmail.
> > > > > > > > Please press the [Plain Text] button when posting from gmail.
> > > > > > > >
> > > > > > > > As a general rule, virtual aliases should have a fully qualified
> > > > > > > > domain name as the result. This prevents surprises.
> > > > > > > >
> > > > > > > > instead of something like:
> > > > > > > > giovanni.claveriamail.example.com giovanni.claveria
> > > > > > > >
> > > > > > > > use instead:
> > > > > > > > giovanni.claveriamail.example.com giovanni.claverialocalhost
> > > > > > > >
> > > > > > > > and make sure "localhost" is included in the main.cf mydestination
> > > > > > > > parameter (assuming you want local delivery).
> > > > > > > >
> > > > > > > > If you need more help, please see:
> > > > > > > > http://www.postfix.org/DEBUG_README.html#mail
> > > > > > > >
> > > > > > > > --
> > > > > > > > Noel Jones
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > THanks, I will try that, the localhost part., and thanks also for
> > > > > > > reminding on plaintext button., I will feedback later after observing
> > > > > > > what will happen next.
> > > > > > >
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> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
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