Re: Outgoing SMTP Servers

[Carlos Martinez-Cagnazzo <carlosm3011 () gmail com>]

My point exactly, I am perfectly happy authenticating and relaying
through either my MX at the office or with Google's SMTP server. But I
just can't do that if SMTPoSSL ports are blocked by some lazy net
admin.

And I definitely hate it when I have to "pay" (in terms of delay and
overhead) the price of a VPN in order to just send a couple of emails.

cheers

Carlos

On Tue, Oct 25, 2011 at 1:57 PM, Dennis Burgess <dmburgess () linktechs net> wrote:
> > 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
>
> [dmb] This is the exact question, why, do you NEED a SMTP Relay on ANY network.  Your domain has a mail server out on 
> the net that if you authenticate to, I am sure will relay your mail, and the reverse DNS and SPF records would match 
> then as well.  Why does the local internet provide NEED to relay though their server, regardless of the port.
>
> > On Tue, Oct 25, 2011 at 10:43 AM, Bjørn Mork <bjorn () mork no> wrote:
> > > Owen DeLong <owen () 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-c
> > > ontent/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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Carlos M. Martinez-Cagnazzo
http://www.labs.lacnic.net
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