Re: Not your normal "can't send mail" help request

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HHH
"N. Miller" <anonymous@xxxxxxxxxxxxxxxxx> wrote in message
news:1r1narvbllsbq$.dlg@xxxxxxxxxxxxxxxxxxxx
On Thu, 14 Aug 2008 07:36:00 -0700, pafos wrote:

To follow on here is the ISP Technical reply !!

""Although both numbers connect to the same network, it is possible the
IP
address allocated to customers on the ...276 number is different to the
pool
allocated to those connecting on the ...034 number.

This therefore prevents SMTP transit on the ..276 number.

I'll pass this onto the network support team, so they can ensure the IP
address ranges seen on the ...276 number will be seen as acceptable by
the
SMTP servers accordingly.""

Unusual, but I saw similar before SBC bought AT&T.

SBC allowed a simultaneous dial and DSL connection; useful for families
with
offspring away at school, and other situations. However, the dial access
number list for my area would connect either to an old Prodigy dial-up POP
(SBC bought Prodigy), which worked for send email, or a Level 3 dial-up
POP
(which did not work, because the mail server would not recognize the Level
3
IP addresses as "authorized" for access).

Just months before SBC completed the purchase of AT&T, they figured out
which ranges of Level 3 IP addresses customer using dial access were
getting, and added them to the mail server ACL. At last, we could send
email, even if we were on a Level 3 dial-up access number.

P.S. AT&T brought their own dial-up access POPs to the party. SBC renamed
the company as, "AT&T", and moved all of the Level 3 dial-up access POPs
(in
the Level 3 4.0.0.0/8 netblock) to the AT&T Worldnet Service dial-up
access
POPs (in the AT&T 12.0.0.0/8 netblock). They had to change there ACLs one
more time.

--
Norman
~Shine, bright morning light,
~now in the air the spring is coming.
~Sweet, blowing wind,
~singing down the hills and valleys.


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