[Mailman-Users] Slow Processing/Delivery

Jason Rotunno jrotunno at swarthmore.edu
Thu Dec 14 21:23:25 CET 2006


Hi,

We're experiencing some significant delays with our mailman lists. Some 
messages are delivered instantly, while others can take hours (or over a 
day) before it's delivered. For example, a message came in at 4:07am and 
was passed on to  mailman for processing:

Dec 13 04:07:43 cork postfix/nqmgr[30962]: 45D6040050: from=<XXXX at XXXX>, 
size=28307, nrcpt=1 (queue active)
Dec 13 04:07:43 cork postfix/local[18473]: 45D6040050: to=<star at XXXX>, 
relay=local, delay=1, status=sent ("|/var/mailman/mail/mailman post star")

The mail wasn't actually sent out from the mailman list until 2:25pm, 
though:

Dec 13 14:25:20 cork postfix/nqmgr[30962]: BE6DC3FCCD: 
from=<star-bounces at XXXX>, size=29664, nrcpt=7 (queue active)
Dec 13 14:25:20 cork postfix/nqmgr[30962]: C85E53FCCE: 
from=<star-bounces at XXXX>, size=29688, nrcpt=1 (queue active)
Dec 13 14:25:20 cork postfix/nqmgr[30962]: CFDB03FCCF: 
from=<star-bounces at XXXX>, size=29664, nrcpt=8 (queue active)
Dec 13 14:51:34 cork postfix/nqmgr[30962]: C85E53FCCE: 
from=<star-bounces at XXXX>, size=29688, nrcpt=1 (queue active)

We're running about 8-10 mailing lists, with membership numbers ranging 
from a dozen members to about 1,000 (though there isn't much activity on 
any of them), and our MTA is postfix. The delays aren't confined to one 
list and they're not consistent. I don't believe there are mail delivery 
delays with messages not sent to mailman. Does mailman do any kind of 
prioritizing depending on system load?


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