[Dovecot] IMAP quotas - Reasonable size?

[Tobias Balle-Petersen]

Hello...

I'm setting up dovecot (IMAP only) at an ad-agency (Lots of big files attached to mails). I'm 
wondering... What would you consider to be reasonable mail quota? My concern is, that some 
client-software will have problems with huge mailboxes. I was going to give everyone 2GB, but some 
users demand 15GB+. Does dovecot "prefer" mailboxes within a certain size?

Looking forward to hear your thoughts on the subject.

Thanks,
Tobias Balle-Petersen