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Re: Transparent hijacking of SMTP submission...


From: William Herrin <bill () herrin us>
Date: Sat, 29 Nov 2014 10:44:35 -0500

On Thu, Nov 27, 2014 at 9:51 PM, Jay Ashworth <jra () baylink com> wrote:

----- Original Message -----
From: "William Herrin" <bill () herrin us>
I'm not sure I follow your complaint here. Are you saying that Comcast
or a
Comcast customer in Washington state stripped the STARTTLS verb from
the
IPv4 port 587 SMTP submission connection between you and a third
party?

Yup; that's what he's saying.  This was in the technical press earlier this
week -- or the end of last.


Hi Jay,

Seems to me that if an ISP is altering the contents of its users' packets
(not just blocking them, altering them) then that ISP should be named and
shamed, if not worse. Unless the customer contracted for special account
type where that was a desired and intended feature, such behavior is
inexcusable.

If it's a customer of that ISP, on the other hand, then it's just the
normal idiocy and paranoia, no different than the retarded behavior by
amateur sysadmins that block all ICMP because they don't want to be pinged
(see PMTUD and its effects on TCP).

Anyway, I was curious which accusation was being leveled.

Regards,
Bill Herrin


-- 
William Herrin ................ herrin () dirtside com  bill () herrin us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
May I solve your unusual networking challenges?


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