Outgoing SMTP Servers

Carlos Martinez-Cagnazzo 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.

regards

Carlos

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.
> http://translate.google.com/translate?hl=en&u=http://ikt-norge.no/wp-content/uploads/2010/10/bransjenorm-SPAM.pdf
> (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?
>
>
>
>
> Bjørn
>
>



-- 
--
=========================
Carlos M. Martinez-Cagnazzo
http://www.labs.lacnic.net
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