[FOSDEM] FOSDEM needs better netadmins
lists at janc.be
Wed Feb 28 16:34:28 CET 2007
On wo, 2007-02-28 at 12:39 +0100, Edwin Mons wrote:
> Johan van Selst wrote:
> > Jan Claeys wrote:
> >> On wo, 2007-02-28 at 11:57 +0100, Edwin Mons wrote:
> >>> Or be a nice Netizen and use SMTPS and SASL authentication with your
> >>> mail provider ;) It worked all weekend for me without reconfiguration.
> >> What Edwin means is described in RFC-2476 "Message Submission", which
> >> uses port 587.
> >> Unfortunately most internet providers don't support this... :-(
> > No, what Edwin refers to is described in RFC-4422, "Simple
> > Authentication and Security Layer" and uses the standard smtp (25) or
> > secure smtp (465) port and is supported by serveral ISPs I know of.
> Thanks, Johan. This is indeed what I referred to. A lot of providers
> have this mechanism open nowadays to facilitate for laptop-users who
> cannot be expected to be on their home-network all the time.
That's exactly the purpose of the RFC-2476 message submission service at
port 587 (which may have RFC-4422 style SASL-support), while port 25 &
465 are intended for connections between "real" mailservers...
>From "1. Abstract" in RFC-2476:
Separating messages into submissions and transfers allows developers
and network administrators to more easily:
* Implement authenticated submission, including off-site submission
by authorized users such as travelers
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