sendmail-8.12.6+cyrus-imapd-2.0.17: check presence of the cyrus mailbox during establishing SMTP connection

[Igor Brezac]

On Fri, 7 Nov 2003, Andrzej Filip wrote:

> Igor Brezac wrote:
> > On Fri, 7 Nov 2003, Andrzej Filip wrote:
> >
> >
> >>Rob Siemborski wrote:
> >>
> >>>On Thu, 6 Nov 2003, Andrzej Filip wrote:
> >>>
> >>>
> >>>>>- What would the map name be?  cyrus?  Would it ever change?  Can people
> >>>>>envision different types of maps that this daemon would have to support?
> >>>>
> >>>>"cyrus" seems to be good default name.
> >>>>Let us start with "mailbox presence" checking.
> >>>
> >>>I agree.
> >>>
> >>>
> >>>>Next version may also:
> >>>>* check if mailbox will accpet message of given size based on "SIZE="
> >>>>parameter of "MAIL FROM:"
> >>>>* take into account who successfully authenticated SMTP session
> >>>>[it can make some folders accessible]
> >>>>* apply some sieve reject rules based on envelope sender and sending host
> >>>
> >>>This last one might be very hard, especially if rules are based half off
> >>>an envelope bit and half off a header bit.  I wouldn't want to think of
> >>>trying to run a sieve interpreter with limited information.
> >>
> >>Would not it be posiible to interpet only heading sieve rules which reject
> >>message based on info available at "RCPT TO:" point ?
> >>First "non reject" or "need information not available yet" sieve rule would
> >>stop "envelope based" sieve rules interpretation.
> >>[ Reject what you know for sure you will reject later - ASAP reject ]
> >>
> >>It would be nice to allow sieve reject messages before message body is
> >>received. IMHO it is worth to investigate achievable gain/cost.
> >
> > This would be nice, but as much as sendmail 'abuses' these maps I wonder
> > if busier sites would be able to use such maps.
>
> Current sendmail.cf can ask up to 7 virtusertable queries but who said we have
> to use maps already existing  in sendmail.cf ?
> [e.g. virtusertable or access]
>
> With careful desing of new map queries in sendmail.cf we can reduce number of
> queries to single one executed only when "RCPT TO:" is received (in
> Scheck_rcpt rule set, no queries during queue runs)

True.  However, it would be nice if sendmail provides 'optimized' macros
for map lookups, virtuser and especially access come to mind.  Most people
do not edit sendmail.cf directly.

-- 
Igor