Some minor thread necro here, but I just wanted to chime in with a "me too". It seemed to be triggered by a specific email that looked fairly normal to me, but I'd be willing to turn it over to a dev to see if it might help duplicate the issue.Steps I took to resolve (sorry, I did all of these at once, not sure which specifically resolved it):By Default on Ubuntu 14.04LTS php cli is configured with a memory limit of "-1", I set this is 512M.Cleared the banlist, I was using this as a pseudo spam filter for repeat offenders.Disabled (not deleted) two filters under Manage -> Ticket Filters:A rule with "Use Reply-To Email" ticked.Another "spam" filter rule/blacklist that may or may not have conflicted with the banlist. (I don't recall if the banned email listed existed when I started the "spam filter" rule, or maybe I was unaware of it at the time).
