[exim] No retry after greylist reject

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Author: Keith Edmunds
Date:  
To: exim-users
Subject: [exim] No retry after greylist reject
We're seeing outgoing mail rejected (as expected) because the far end is
greylisting. However, Exim doesn't seem to be honouring the retry times
and is failing immediately. From the logs:

--------------------------------------------------------------------------------
# exigrep vollands.com /var/log/exim4/* /var/log/old/mainlog.*
2009-08-01 18:48:16 1MDYww-0007FE-4A SMTP error from remote mail server
after RCPT TO:<xxxxx@???>: host rhea.easily.co.uk
[212.53.64.82]: 451 82.108.133.130 - You have been greylisted, please
try later

2009-08-01 18:48:16 1MDYww-0007FE-4A == xxxxx@??? R=dnslookup
T=remote_smtp defer (-44): SMTP error from remote mail server after
RCPT TO:<xxxxx@???>: host easymx2.easily.co.uk [212.53.64.68]:
451 82.108.133.130 - You have been greylisted, please try later

2009-08-01 18:48:16 1MDYww-0007FE-4A ** xxxxx@???
<xxxxx@???>: retry timeout exceeded

2009-08-01 18:48:16 1MDYww-0007FE-4A Completed
--------------------------------------------------------------------------------

Notice that the time of all four log entries is identical. I checked for
any retry data for that domain:

--------------------------------------------------------------------------------
# exinext vollands.com
No retry data found for vollands.com
--------------------------------------------------------------------------------

The retry parameters are out of the box:

--------------------------------------------------------------------------------
begin retry

*                      *           F,2h,15m; G,16h,1h,1.5; F,4d,6h
--------------------------------------------------------------------------------


The only "unusual" part of the configuration is that Mailscanner is being
used, so there are two Exim instances running; however, I don't believe
that this should affect outgoing mail. Most mail is sent without problems.

Grateful for any pointers as to what may be causing this.

Thanks,
Keith