account and email attachment limit
 

How to limit one person's account and to arrange limit of an attachment in a email. Using Debian GNU 3.0 as proxy server.

Attachment size limits - depends on the MTA you're using. Dunno about others, in qmail you put the max. number of bytes in /var/qmail/control/databytes.

Limit one person's account - in what way? you mean a shell account or when they go through the proxy? Assuming you're running squid, have a look at the Access Controls and Delay Pools sections of the squid FAQ:

http://www.squid-cache.org/Doc/FAQ/FAQ.html#toc10

http://www.squid-cache.org/Doc/FAQ/FAQ-19.html#ss19.8

I'm using IMP ver 2.6