>However, due to many spam and "open relay" problems, the engineers were
>forced to block port 25 so that only people signed onto the Earthlink
>network could access our SMTP servers.

This is completely standard, though port 25 isn't blocked in any way 
(you can't generally filter SMTP ports usefully, because you don't 
know from where valid incoming mail will originate). The SMTP server, 
in this case Unix sendmail, just doesn't allow mail to be sent if it 
(a) originates outside, and (b) is also destined outside - ie. it's 
being relayed. This doesn't speak to any of the SMTP authentication 
methods at all, and in fact is the exact problem they're all intended 
to work around.

Offhand it looks like earthlink has a separate server cluster under 
the name "smtp.earthlink.net" that's intended for outgoing, possibly 
relayed mail. These servers may support some form of SMTP auth, 
though you'd have to find out from them how to configure it for your 
client. I looked briefly and didn't see support for either of the 
common methods (AUTH or STARTTLS), however (Eudora 4+ supports SMTP 
AUTH).

[someone wrote about Earthlink recently turning off XTND XMIT]

Beats me why they'd turn off POP XTND XMIT if they had it before - it 
shouldn't really be any harder for them to provide it under this 
incoming/outgoing split SMTP scheme, unless their POP and SMTP 
servers were on different networks (which they're not - in fact 
they're on the same cluster of Unix servers). Are you sure they 
didn't instead stop using the klugey POP-authenticated-SMTP (also 
known as "SMTP-after-POP")? If they've really abandoned XTND XMIT, 
perhaps it's just because nasty old Outlook doesn't support it. If 
you're a customer of theirs and would benefit from having it 
available for Eudora, tell them so. Webmail is an unacceptable 
substitute IMO, and I wouldn't personally pay money to an ISP if that 
were the best they could do for roaming users.

-- 
Marc Sira               |       [EMAIL PROTECTED]
"If you can't play with words, what good are they?"


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