>Actually, the SMTP may well care about the return address.

It really "shouldn't"

>In the case of the person here (using AT&T, which blocks SMTP access 
>except to their SMTP server), his ability to send through Outlook 
>stopped.  AT&T would say that he should change the SMTP server from ours 
>to theirs.  Now that *may* work fine at first, provided that AT&T's SMTP 
>server allows him to send mail using a non-AT&T return address.

ATT forces the user through ATT server, from an ATT ip address, can watch 
excessively high sending rates.  I would really be surprised if ATT would 
block outgoing "MAIL FROM: sender@senderdomain"  that didn't match exactly 
"[EMAIL PROTECTED]".  That would be excessfully restrictive, but 
maybe ATT's legal beagles are outta control.

>However, the problem occurs when he brings his laptop into the 
>office.  When he is in the office, he is using our network.  Outlook, 
>which is set to use AT&T's SMTP server, isn't going to be able to send 
>through the AT&T server from our network for obvious reasons (not using an 
>AT&T IP address, and not to or from an AT&T E-mail address).

Well, he just creates two LookOut accounts, one for sending through ATT 
from home, one for sending through the office server.

Len

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