Using Razuna 1.6.5 on Tomcat/7.0.39. I am not able to send out
emails (updates, welcomes, etc) any more. The set up worked absolutely
fine until the end of last week when suddenly outgoing emails suddenly
stopped working. Nothing has changed in the configuration, it just
happened during normal operation. A few potentially large emails were
sent out before the "crash" happened.
The smtp server is working, so I don't even know where to start
looking for a solution. Any suggestions are welcome!