Re: [exim] Unexplained Long Retry Time

On Tue, 22 Mar 2016 09:12:56 +0000
Jeremy Harris <jgh@???> wrote:

> On 21/03/16 20:13, Kevin Smith wrote:
> > # grep 1ai5Ho-0004FK-Im mainlog
> >
> > 2016-03-21 15:14:47 [16326] 1ai5Ho-0004FK-Im <= ... received
> > 2016-03-21 15:14:47 [16326] 1ai5Ho-0004FK-Im no immediate
> > delivery: ... 2016-03-21 15:27:15 [19771] 1ai5Ho-0004FK-Im == [user]
> > routing defer (-51): retry time not reached
> >
> > # exinext 1ai5Ho-0004FK-Im
> > No retry data found for 1ai5Ho-0004FK-Im
>
> > exinext <target-user> reports "no retry data found for
> > <target-user>" exinext <target-domain> does report some errors.
>
> What errors?

No remote hosts found for <thisdomain>
Route: nellie@???:<<user1>@<thisdomain>> error -44: SMTP error from remote mail server after RCPT TO:<Nellie@???>: host ASPMX.L.GOOGLE.com [173.194.208.26]: 451-4.3.0 Multiple destination
first failed: 26-Feb-2016 09:24:12
last tried: 26-Feb-2016 09:24:12
next try at: 26-Feb-2016 09:39:12
Route: nsouvey@???:<<user2>@<thisdomain>> error -44: SMTP error from remote mail server after RCPT TO:<nsouvey@???>: host aspmx.l.google.com [173.194.205.26]: 451-4.3.0 Multiple destination dom
first failed: 15-Mar-2016 14:57:21
last tried: 15-Mar-2016 14:57:21
next try at: 15-Mar-2016 15:12:21
Route: billmurray@???:<<user3>@<thisdomain>> error -44: SMTP error from remote mail server after RCPT TO:<billmurray@???>: host allisonblades.com.pri-mx.na0102.smtproutes.com [192.69.16.71]: 4
first failed: 25-Feb-2016 17:40:16
last tried: 25-Feb-2016 18:03:00
next try at: 25-Feb-2016 18:18:00
Transport: <user4>@<thisdomain> error 2: No such file or directory
first failed: 03-Nov-2014 09:53:11
last tried: 22-Mar-2016 09:35:54
next try at: 22-Mar-2016 15:35:54
past final cutoff time

This last one (<user4>) is interesting. The system is part of a samba4
(as windows primary domain controller). We verify local addresses with
a LDAP call. for <user4> this fails, as expected (they are a domain
user but don't have an email address/mailbox). However the the default
localuser router uses check_local_user which does does find the user
and tries to use a non-existent home directory. This generates a
somewhat unintuitive "retry timeout exceeded" error (maybe because this
is a recurring error).

2016-03-22 08:06:03 [22181] 1aiL4S-0005lG-Hd == <user4>@<thisdomain>
R=localuser T=local_delivery defer (2): No such file or directory:
failed to chdir to /home/<NOEXIST>/<user4> 2016-03-22 08:06:03 [22181]
1aiL4S-0005lG-Hd ** <user4>@<thisdomain>: retry timeout exceeded
2016-03-22 08:06:03 [22185] 1aiL4V-0005lp-IR <= <> R=1aiL4S-0005lG-Hd
U=Debian-exim P=local S=6526 T="Mail delivery failed: returning message
to sender" from <> for OutdoorSales@???

--
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Kevin Smith | ShadeTree Software, Philadelphia, PA, USA; 215-487-3811
            | Kevin/MNC 215-487-2125