On the other hand, we always look for ways to 'tighten' up..
Years ago, we were among the first to reject connections from IP(s)
without rDNS/PTR records, and now that is pretty well industry standard.
More and more, if you want to deliver email in today's environments, you
have to ensure your
Yeah, we looked at blocking underscores in helo arguments last year when we
went on an rfc enforcement rampage, but gave up, it's too common. We did
start blocking email addresses, http urls, regular expressions, spaces, and
a bunch of other similar wackiness.
We don't allow them in domains for M
> On Jan 11, 2017, at 10:12 AM, Michael Peddemors
> wrote:
>
> Noticed that they are using underscores in their hostnames used in the
> HELO/EHLO..
>
> https://www.ietf.org/rfc/rfc1034.txt
>
> p3plsmtp09-04_26.prod.phx3.secureserver.net
>
> Comments from the list?
>
> While a lot of 'loose
Anyone got a working contact for Cablevision (optonline.net)? Their
blinqu...@cv.net role account used to work, but bounces now. Already trying
abuse@/postmaster@, but haven't had much luck w/ them before.
Deferrals we're getting are:
@t...@optonline.net@0@default@168.235.226.173@12@3@8430.00@167
While underscores are disallowed in hostnames, they are allowed in DNS
records. So while technically correct, there's always going to be
ambiguity there. I wouldn't ever block based on this, under the "be
liberal in what you accept" theory.
Regards,
Al Iverson
--
Al Iverson
www.aliverson.com
(312
Noticed that they are using underscores in their hostnames used in the
HELO/EHLO..
https://www.ietf.org/rfc/rfc1034.txt
p3plsmtp09-04_26.prod.phx3.secureserver.net
Comments from the list?
While a lot of 'loosening' up on domain name(s) encoding has occurred,
haven't seen anything that has ch
Please contact me offlist.
Sincerely,
Eric Tykwinski
TrueNet, Inc.
P: 610-429-8300
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