On Wed, 18 Feb 2009, Mark Crispin wrote:
> Basically, I did what you do by port redirection via code in imapd itself.
> Any client coming from a *.blackberry.com source gets a blackberry flag
> switched on internally in imapd which then activates the hack.
>
> I'm not sure if trying to enumerate all RIM source IP addresses, or
> assuming that a *.blackberry.com will catch them all (I don't know what is
> done for BIS outside of North America...), is better. Maybe a combination
> of both.
FWIW, we see *.blackberry.net as well as *.blackberry.com IMAP
connections on our server.
One of the hacks I've made to our UW-imap kit is to add a sunset
timer, no IMAP session is allowed to run more than 24 hours.
The sunset timer is coded to expire all sessions at 5:00 AM local
time. Thus at 5:00:01 all mailboxes are unused so the first session
to reconnect will "burp". (the 5:00 AM expiry has an exception
for any session that is less than 3 hours old to not inconvenience
new sessions from clients in Asia ;).
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
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