On Fri, 11 Feb 2005, John W. Baxter wrote:
>
> We recently had a chance to ask Tmobile about this. They divert to their
> server which of course doesn't know how to authenticate our users.
> We think they only do this with port 25, not 587 but we haven't seen that
> proven.
It is best to use port 587 or 465, depending on what your software
supports. Even then you might be out of luck: we had a support question
recently from a Voodoophone user who was having problems sending email
because they blocked port 587 and the software didn't support 465.
With any luck the prospective publication of draft-hutzler-spamops
will persuade these misguided ISPs to unblock 587.
Tony.
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