Stephen - Sorry for not being clear.
List members are world wide, some have the same domain, for example, perhaps 10% use gmail.
We have documented cases of two users at the same company having dramatically different delivery times. e.g. for us...@abc.com and us...@abc.com: user2 may get delivery in 5 seconds vs. user1 getting the delivery in 4 hours, inconsistently. e.g. the next message may go through fine, or delay a different user.
Lets try the headers a different way: http://puu.sh/aZpeO/cbef0bd773.png Cheers! Kevin On 8/19/2014 12:56 PM, Stephen J. Turnbull wrote:
Kevin Carpenter writes: > I have a somewhat large mailing list, about 1700 users, that is > generally working just fine. However, some users are seeing LONG delays > (like 4+ hours) on mail delivery while other users, in the same > organization, get sub-minute delivery. By "same organization", you mean the sender, the mailman host, and the recipients all work for/are members of the same organization? By "some users" you mean some users always have long delays, and the others don't? Some users sometimes have long delays, sometimes not? FWIW, the "four hours" sounds like some host is greylisting. If so, it should be visible in the logs, as a temporary failure for the message which then ends up in the queue, and getting retried about four hours later, when it goes through. > Specifically, the step 6 delay in the header analysis below is > typically 2 seconds. I don't see anything at all below. This list strips many kinds of attachments.
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