[#7073] add general error handling to smtp_server's message handling
[#7073] add general error handling to smtp_server's message handling

Overriding asyncore's log_info (used by handle_error) might work, or
overriding synchat's handle_read with error trapping might be better
since it'd be at a higher level, but those would require extra work
since it seems it'd have to be done on smtpd.SMTPChannel not
smtpd.SMTPServer

heiths/allura,lym/allura-git,apache/incubator-allura,apache/incubator-allura,heiths/allura,lym/allura-git,heiths/allura,apache/incubator-allura,apache/incubator-allura,apache/allura,heiths/allura,apache/allura,apache/allura,heiths/allura,lym/allura-git,apache/allura,apache/allura,lym/allura-git,lym/allura-git