listen to a dynamic interface

Bill Kearney wkearney99 at
Mon Dec 12 15:30:34 EST 2005

You could always stop/start cyrus based on the ppp interface being live.
That way it'd bind to whatever address is active and then only when the link
is up.  I suppose you could leave it live all the time and just restart it
when the ppp link state changes.

It's not common to run a mail server behind a dynamic address, they
generally benefit from being on stable, always-on, connections.  You *can*
run them otherwise but it's usually not recommended.

Other ideas like using a VPN come to mind but it depends on just how complex
you need it to be.

-Bill Kearney

----- Original Message ----- 
> I want to set /etc/cyrus.conf to start another imap[s] proccess to
> listen in a dynamic ip interface (ppp0).
> AFAIU, you have to specify the ip address of the interface in the
> "listen" option.
> So, how would a ppp0 interface that has a dynamic ip that needs its own
> proccess (that's because of the ssl certificate) be configured?

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