delayed Batched SMTP Mail

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Auteur: Kuyper Hoffman
Date:  
À: exim-users
Sujet: delayed Batched SMTP Mail
We're currently submitting a large number of email messages to users
on our WAN. The messages are supplied to me as Batched SMTP (50
messages per file) and I submit them with a 60-120s pause between
batches (the machines to which they are actually being delivered are
under quite a heavy load and with the relatively high bandwidth we
have on our backbone the messages can be quite a handful if the
batches are too large or too frequent)

In particular, one server has a very high load and I have
consequently reduced it's number of incoming SMTP connections to
around 30 (with 20 reserved for local nets).

In a few of the batches I have obviously hit the server at a busy
time and the messages have not been delivered immediately:
43m 0vNcvA-0001V8-04 <accounts@???>
43m 0vNcv8-0001V8-02 <accounts@???>
40m 0vNcxU-0001cl-03 <accounts@???>
40m 0vNcxM-0001cl-00 <accounts@???>
40m 0vNcxQ-0001cl-00 <accounts@???>
43m 0vNcvB-0001V8-03 <accounts@???>
43m 0vNcv6-0001V8-03 <accounts@???>
43m 0vNcvA-0001V8-00 <accounts@???>
43m 0vNcv8-0001V8-05 <accounts@???>
43m 0vNcvA-0001V8-01 <accounts@???>
43m 0vNcvA-0001V8-03 <accounts@???>
42m 0vNcvD-0001V8-02 <accounts@???>
....etc

However, upon trying to discover why 0vNcv6-0001V8-03 has not been
delivered:
-rw-------   1 root     other          0 Nov 13 12:51 /var/spool/exim/msglog/0vNcv6-0001V8-03



and in mainlog:
1996-11-13 12:51:48 0vNcv6-0001V8-03 <= accounts@??? U=root P=bsmtp S=2885


So it comes in, but never leaves :-(

The retry times for all local domains are:
*.iafrica.com          *           F,5m,30s; F,4h,5m; G,16h,30m,1.5; F,10d,8h


so it should be retrying very regularly. If I manually "exim -d1 -M"
the message it works fine:
1996-11-13 12:51:48 0vNcv6-0001V8-03 <= accounts@??? U=root P=bsmtp S=2885
1996-11-13 13:57:06 0vNcv6-0001V8-03 => bcc@??? <bcc@???> R=lookuphost T=smtp H=minnie.iafrica.com [196.7.142.132]
1996-11-13 13:57:06 0vNcv6-0001V8-03 Completed

but note that gap :-(

Any ideas? relay01 is running:
SunOS relay01.iafrica.com 5.5.1 Generic_103640-01 sun4u sparc SUNW,Ultra-2

thanks
Kuyper
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