Exim Batching bulk emails? Help!

morgano

Registered
Oct 5, 2013
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Root Administrator
Hey I am hoping someone can help me understand why the following issue is happening.

All domains are set to allow unlimited emails per hour and all emails sent are normally sent instantly with no limiting or throttling. However, when I try to email out 60,000 newsletters via Vbulletin I can see that the emails are being sent in batches of 50 every 10 minutes, no more and no less. I can't find any setting that would affect this (e.g. 50 emails to be sent every 10 minutes) and the server load is 0.2 of a maximum 8.0. On my old server which was a far less powerful VPS I could send out all 60,000 emails in a few minutes with no problems whatsoever. This new dedicated server is at least 10 times more powerful so should have no problem handling the load however is taking 7 days to send out each newsletter.

Am I overlooking something? I can't find any PHP settings that would affect this and Vbulletin has not been modified since I moved servers therefore it must be down to the configuration of the mail server as to why this is happening.

If anyone has any ideas I would be extremely grateful. I have even followed a few guides to increase exim performance including modifying the following variables to these values:

QUEUE=5m
queue_run_max = 50
remote_max_parallel = 50

smtp_accept_max = 500
smtp_accept_queue_per_connection = 2000
deliver_queue_load_max = 10

I've even attempted to increase them further but it makes no difference. Thanks for any help :)

- - - Updated - - -

I forgot to mention that these emails are not in the WHM mail queue (I guess they must be in the spool? Is that right?)
 

morgano

Registered
Oct 5, 2013
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Root Administrator
I think I've found the issue, looks like Vbulletin reset some settings and therefore the issue lied with Vbulletin! Hope this helps anyone in the future...
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
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2,202
363
I think I've found the issue, looks like Vbulletin reset some settings and therefore the issue lied with Vbulletin! Hope this helps anyone in the future...
Thank you for updating this thread with the solution.