>Blocking of Port 25 presumably means blocking incoming connections on Port
>25?
no, dial up users cannot relay their outbound mail from the dialup ip
to any ip's port 25 except for the ip's of MSN's own smtp servers.
>What would be the end-user effect of this (apart from phoning me up
>complaining they can't send mail any more and what am I going to do about
>it)? Bounced back mail?
The dial-up user would not be able to use the settings in his mail
pgm that pointed to any SMTP server that wasn't MSN's. The symptom
seen by users, only when trying to send mail, is something equivlaent
to "connection refused" or "failed".
This has no effect on the user reading POP, webmail, or IMAP on any server.
>If so, I can't understand why they would do this - no MSN user could receive
>mail any more.
The dialup users cannot spam from their PC's to mail servers around
the world, their spam must pass through MSN's servers where MSN would
be able detect it.
>Or am i missing something here?
I glad you asked that, cause just this once, 'fraid so. :)))
Len
http://MenAndMice.com/DNS-training Austin,TX: 23,24/04; SFO,CA:
7,8/05
http://BIND8NT.MEIway.com : ISC BIND 8.2.3 "NT3" for NT4 & W2K
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