[Mailman-Users] delayed distribution of messages

Lluis Montoliu montoliu at cnb.csic.es
Sat Sep 17 21:14:28 CEST 2011

Thanks Mark for your further comments.

Yes, the delay is at the server, but it is nothing to do with mailman.  
According to your comments, I have just discussed with the Systems  
Admin of our hosting and it looks like they implemented a filter  
(server being capable of sending only 1 message every 5 seconds, which  
would exactly explain our observed delays for the number of members of  
our list) apparently to avoid being associated with black lists and  
identified as spammer, which I do not think at all this is necessary  
or required.

I have already instructed them to immediately release this filter and  
let the messages flow at the technical speed associated with the  
server capabilities.

Thanks anyway for your very helpful comments


Quoting Mark Sapiro <mark at msapiro.net>:

> Lluis Montoliu wrote:
>> Here are the headings of one of these delayed messages, sent yesterday
>> (at 18:47), that was eventually distributed 45 minutes later (at 19:32):
> [...]
>> Received:
> [...]
>> from d344.dinaserver.com (localhost []) by
>> d344.dinaserver.com (Postfix) with ESMTP id 5D6E724B62; Fri, 16 Sep
>> 2011 19:32:29 +0200 (CEST)
>> from ironport.csic.es (ironport.csic.es []) by
>> d344.dinaserver.com (Postfix) with ESMTP id 4329A23BBE for
>> <istt_list at transtechsociety.org>; Fri, 16 Sep 2011 18:47:42 +0200 (CEST)
> [...]
>> Thus, according to the timings above, it looks as the delay indeed
>> occurs at our d344.dinaserver.com server, not sure whether we can say
>> this is related to mailman or to server performance with these data,
>> could we?
> It looks like the delay is between delivery to Mailman and delivery
> from Mailman. You could confirm this by grepping the Postfix log
> (/var/log/maillog ?) for the queue IDs 5D6E724B62 and 4329A23BBE.
> Also, the log messages for queue ID 4329A23BBE will show whether the
> delay is in Postfix or not.
> Do you have access to this log? Do you have access to Mailman's logs
> and files. If so, what's in Mailman's 'smtp' and 'smtp-failure' logs
> with time stamps in the one hour or so range beginning Fri, 16 Sep
> 2011 18:47:42?
> --
> Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
> San Francisco Bay Area, California    better use your sense - B. Dylan

Dr. Lluis Montoliu
Investigador Cientifico - Research Scientist CSIC
Centro Nacional de Biotecnologia (CNB-CSIC)
Campus de Cantoblanco
C/ Darwin, 3
28049 Madrid (Spain)
Tel. +34-91-5854844  / Fax +34-91-5854506
e-mail: montoliu at cnb.csic.es
WEB: http://www.cnb.csic.es/~montoliu/

More information about the Mailman-Users mailing list