Authentication with SMART_HOST in sendmail?

[David Limón Romero]

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Hello, I have a server with FC4 running as mail server, it's on a DSL
line and it's having problems sending mail to certain domains (hotmail,
yahoo and others), I found in sendmail than using SMART_HOST it could
transfer all outgoing mail to another server (my ISP's mail server),
AFAIK that server doesn't require authentication; with SMART_HOST
enabled, sendmail resends its load to the ISP mail server, but I'm
confused about how to make my sendmail to authenticate with my ISP mail
server (yes, my sendmail as client)

Can anyone give me a hint?

TIA
David
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David Limón Romero <dlr[@]mega.net.mx>
http://www.mega.net.mx
GPG/PGP Public Key:0xAC471FBB
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