DNS Hijacking by Cox
Florian Weimer
fw at deneb.enyo.de
Mon Jul 23 06:18:58 UTC 2007
* Sean Donelan:
> On Sun, 22 Jul 2007, William Allen Simpson wrote:
>> Comcast still blocks port 25. And last week, a locally well-known person
>> was blocked from sending outgoing port 25 email to their servers from her
>> home Comcast service.
>
> MSA port 587 is only 9 years old. I guess it takes some people longer
> than others to update their practices.
You missed the "to their servers" part (I don't think it's singular
"they" 8-). At the intra-ISP level, submission vs. SMTP does not
really matter because it's all local policy. If they block her on
25/TCP on their own servers, they can easily block her on 587/TCP,
too.
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