A user has reported a problem receiving attachments from anybody outside our
network. At first I brushed him off as crazy. But the problem can be
duplicated on other pop3 accounts.
Some people not in our network (AOL is one) trying to send email to users on
our network will receive an error message while trying to send an
attachment. But, I discovered if the user resends right away, then the
message with attachment will be accepted about 75% of the time.
Could this be related to maximum allowed SMTP connections? I'm using qmail
smtp with tcpserver. Or is this a problem with SMTP server from the sending
system? I have noticed that one of the SMTP server was sendmail 8.9.3
