Outgoing SMTP Servers
carlosm3011 at gmail.com
Tue Oct 25 10:28:05 CDT 2011
I'm curious how a traveller is supposed to get SMTP relay service
when, well, travelling. I am not really sure if I want a VPN for
sending a simple email.
And I can understand (although I am not convinced that doing so is
such a great idea) blocking 25/tcp outgoing, as most botnets will try
that method of delivery. However, I do believe that outgoing 465
SHOULD always be allowed.
On Tue, Oct 25, 2011 at 10:43 AM, Bjørn Mork <bjorn at mork.no> wrote:
> Owen DeLong <owen at delong.com> writes:
>> It's both unacceptable in my opinion and common. There are even those
>> misguided souls that will tell you it is best practice, though general agreement,
>> even among them seems to be that only 25/tcp should be blocked and that
>> 465 and 587 should not be blocked.
> It is definitely considered best practice in some areas. See e.g.
> (couldn't find an english original, but the google translation looks OK)
> The document is signed by all major ISPs in Norway as well as the
> Norwegian research and education network operator, so it must be
> considered a local "best practice" whether you like it or not.
> Note that only port 25/tcp is blocked and that some of the ISPs offer a
> per-subscriber optout.
> Eh, this was the Northern Aurope NOG, wasn't it?
Carlos M. Martinez-Cagnazzo
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