Bug#555664: closed by Marco d'Itri <md at linux.it> (Bug#555664: fixed in netbase 4.38)

[Henrique de Moraes Holschuh]

On Mon, 07 Dec 2009, Klaus Ethgen wrote:
> I believe that. However, the reality is not covered by IANA in that
> case.

That is beside the point.  We are not breaking Debian Stable installs
without notice, only Squeeze and Sid users are affected (for obvious
reasons).

> > But that mistake is in the past, and it is too late to fix it.
> 
> Well, just allocate the port to two applications would help. But I do
> not know if that is possible.

It is not usually done.  And it is not that simple, the RFC that defines the
managesieve protocol asked a port from IANA, and was given 4190.  That port
is the standard port for managesieve.

> > > That change make debian incompatible to all managesieve installations
> > > out there!
> > 
> > Everyone will have to move to the IANA-allocated port.
> 
> It is easy for my small world to do that but very hard to force the rest
> of the world to do the same!

RedHat and others won't have much choice in the matter.  IANA has spoken,
and all will have to hear (sooner or later).  Debian was just the first (IF
it is the first, you'd have to check Fedora 12 and latest SuSE to know).

RHEL might follow suit on RHEL 6 if Fedora has updated its /etc/services
already, for example.

> > And you *are* free to tell cyrmaster to listen to port 2000, you know.
> 
> True. All installations I know about use port 2000 for sive. However not
> only cyrus is using sieve than also dovecot.

For Cyrus, it gets better: you can tell it to listen to *both* ports, and
migrate to the new one as you see fit.   DoveCot might be able to do the
same, I wouldn't know.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh