[RndTbl] Shaw dropping on greylist?

[Trevor Cordes]

I have an apparent greylisting issue with Shaw.  I wonder if anyone else 
has noticed this.  Shaw's mail server appears to only try either a few 
times or for a limited amount of time and then give up.  I get lots of 
logs like the following (names have been changed to protect the guilty).  
After that, no further hits from that from address.

I had my greylisting time set to 29mins, but have now changed it to 15mins 
to try to get within the Shaw window.

Anyone else with a >16 min greylist delay might want to check their logs 
for similar behaviour, and/or take reports of missing emails more 
seriously.  Please report back if you see similar behaviour.

Thanks!

Jan 20 17:51:35 pog milter-greylist: o0KNpZhm012547: addr idcmail-mo2no.shaw.ca[64.59.134.9] from <bobo at clown.com> to <me at mine.com> delayed for 00:29:00
Jan 20 17:51:35 pog sendmail[12547]: o0KNpZhm012547: from=<bobo at clown.com>, size=5720, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=idcmail-mo2no.shaw.ca [64.59.134.9]
Jan 20 17:52:37 pog milter-greylist: o0KNqbE4012577: addr idcmail-mo2no.shaw.ca[64.59.134.9] from <bobo at clown.com> to <me at mine.com> delayed for 00:27:58
Jan 20 17:52:37 pog sendmail[12577]: o0KNqbE4012577: from=<bobo at clown.com>, size=5720, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=idcmail-mo2no.shaw.ca [64.59.134.9]
Jan 20 17:54:41 pog milter-greylist: o0KNsfrZ012640: addr idcmail-mo2no.shaw.ca[64.59.134.9] from <bobo at clown.com> to <me at mine.com> delayed for 00:25:54
Jan 20 17:54:41 pog sendmail[12640]: o0KNsfrZ012640: from=<bobo at clown.com>, size=5720, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=idcmail-mo2no.shaw.ca [64.59.134.9]
Jan 20 18:00:54 pog milter-greylist: o0L00sXO012857: addr idcmail-mo2no.shaw.ca[64.59.134.9] from <bobo at clown.com> to <me at mine.com> delayed for 00:19:41
Jan 20 18:00:54 pog sendmail[12857]: o0L00sXO012857: from=<bobo at clown.com>, size=5720, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=idcmail-mo2no.shaw.ca [64.59.134.9]
Jan 20 18:06:36 pog milter-greylist: o0L06ahf013092: addr idcmail-mo2no.shaw.ca[64.59.134.9] from <bobo at clown.com> to <me at mine.com> delayed for 00:13:59
Jan 20 18:06:36 pog sendmail[13092]: o0L06ahf013092: from=<bobo at clown.com>, size=5720, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=idcmail-mo2no.shaw.ca [64.59.134.9]