[kevinh]

Originally Posted by flypaper

^PHP memory limit. Either increase it, or have your host do it.

Thanks, I didn't change the memory limit, but this pointed me to the problem. There was an email with an 8.5Mb attachment in one of the mail boxes which was causing a bit of a "log jam"

I should point out however that I have EI set to discard attachments in emails, so the code must be trying to process the attachments in some way before it discards them. This is potentially a problem on a bigger forum where it would be more common for users to ignore the notice that attachments are not allowed.