Have there been any changes in the SMTP quotas lately?
I have been using a website mailing system for 2 years now with no problems.
I use the PHP function and I have it set so it sends less than 200 mails an hour. I use the Acajoom News module for Joomla.
The only major difference between this mailing and the last one is the overall size of the list. Last mailing it was ~ 4,000 names and now it is ~ 6,000
I am sending 40 emails at a time and right now only the first batch is sent out and then the mailing stops.
Anybody knows the reason for this?