If you're using demime to front-end majordomo, you should patch it to deal with a problem that was recently discovered.
A spammer is sending out spam that claims to be text/html with a base64 attachment. However, there is no attachment. This causes the base64 decoder in demime to go into a loop. In my case, the demime processes grew to multi-hundred-meg and up to a gigabyte, while sendmail filled /var/spool/mqueue with the error messages that demime was emitting.
Thank you, thank you, thank you for posting that. I got up this morning and found my mail system moribund due to syslog filling up /var with error messages, and the load average pegged. I figured out that demime was choking, but could not find the bug, and was reduced to killing and dequeuing stuff and trying to figure out some way (maybe a milter) to exclude null encoded MIME bodies.
-- Michael C. Berch [EMAIL PROTECTED] / [EMAIL PROTECTED]
