[Tip courtesy of Emil from Algorithmics
via our Forums.]
Symptom: Sending SMTP e-mail from any POP
e-mail program (Outlook 2K, Outlook Express, Eudora) causes a delay of
30-60 seconds before a connection is made to the SMTP server to send
mail. Sometimes the email program times out waiting to connect to SMTP server.
Sending attachments is painfully slow. Bypassing the router and
connecting the client computer directly to the Internet results in
normal mail sending speed.
Solution: Your SMTP
server could be trying to use the IDENT
protocol (also known as IDENTD) to authenticate you. Try
forwarding Port 113 (TCP if you need to specify it)
through your firewall to the IP address of the computer that is trying
to send email.