[nycbug-talk] greylisting proxies?

[George Georgalis]

On Thu, Nov 02, 2006 at 08:35:39AM -0501, michael wrote:
>On Thu, 2 Nov 2006 01:44:27 -0500
>"George Georgalis" <george at galis.org> wrote:
>
>> I inquired if anybody else was getting deferral from verizon
>> perpetually and what they do about it---I get 450 for 7 days,
>> then my mta gives up and returns the message.
>
>Not sure if it helps, but in my (limited) experience...
>
>When sending mail TO verizon, I have found they (like many-many others)
>are strict about reverse dns for mx records. If they can not completely
>identify the server trying to talk to them, they will not proceed.
>After repeated attempts, they assume the assailant is a spammer and
>will put them on an internal blacklist. 
>
>	$ dig MX +short galis.org
>	10 run.galis.org.
>
>	$ dig +short run.galis.org
>	70.183.8.250
>
>	$ dig -x 70.183.8.250
>	[snip]
>		;; ANSWER SECTION:
>		250.8.183.70.in-addr.arpa. 86269 IN     PTR
>		wsip-70-183-8-250.ri.ri.cox.net.
>	[snip]
>
>Verizon may be under the impression that you are *not* who you say
>you are... but that is just my un-educated guess.. and probably so
>basic and obvious that it is not the answer to your problem.

I think (tm) that is okay.

yesterday I filled out a form requesting being white listed, they
replied, I'm not being blocked.

// George


-- 
George Georgalis, systems architect, administrator <IXOYE><