Why can't I send mail?

In Mac Mail on my powerbook I can receive mail, but every time I try to send some I get an error that says "Can not send message using server "smtp.mac.com". This happens from home on the same network as my G5 (which has no problem sending mail) or anywhere else I try.
Any ideas?
Tim

Tim,
Many ISP are blocking the use of Port 25 by third party SMTP servers. This is probably the case at home, and the other points where sending with the smtp.mac.com is failing. Change the Port to 587, and try again. See:
http://docs.info.apple.com/article.html?artnum=166743
Does your G5 also have the .mac account set up? I would guess that either the G5 setup is using either the SMTP provided by your ISP, or has the Port set differently?
Ernie

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