email delivery

I have a user sending emails with a php script using phpmailer. Not a problem. They are having delivery issues to cobbk12.org so when they sent their email this morning I checked and I have 78 emails in queue for delivery to @cobk12.org (this is the local school system) I wrote them a letter and they tell me:


Please just tell him they must comply with these limits if they want their mail to get thru.
Max messages per connection = 10
Max recipients per message = 100
Max concurrent connections from a single IP = 100

How do I understand this? What should I do to help with email deliveries?

cPanelMichael

August 18, 2015 17:27

Hello :) You should consult with the user and have them modify their script to send out less emails at a time. It looks like the remote mail server is rejecting the email due to how fast and how many emails this user is sending at once. Thank you.

asmithjr

August 18, 2015 17:41

Yeah, they are asking for help from me. This issue just started after I moved all the accounts to a new server. Many of the emails deliver but the limit they will accept is the issue.

August 18, 2015 18:23

Many of the emails deliver but the limit they will accept is the issue.

You won't be able to control the limits imposed by the remote mail server. You will have to modify the script used for sending email so that it sends less emails out at once. You may want to consult with the developers or support of the script used for sending email to see the best way to do that. Thank you.

email delivery

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