Dear all,

has anyone solution that can limite user incoming
/outgoing mail size on linux?? I mean it's down
to user level. I've searched so many times and days
for this soultion, and it seems it's impossible....

Do I tell client they should use exchange server?

Any suggestion is highly appreciate...

Rgds,
Percy

--
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Luner Elf wrote:


This is usually done at smtp level, so by your MTA. Sendmail, postfix,
exim, all have options to do this.

It is usually not done on userlevel, but if it has to be done, use
quota.


Yes. If you want their solution not be safe.

EJ
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Remove the obvious part (including the dot) for my email address.
http://www.vanwesten.net for examples of ipf and pf.

Dear Erik,

Yup, but it can just to be applied globally, I cannot
define it by user, even on domain...

I'm also thinking to use quota, but it can just
restrict to total mailbox size, but not per mail basis...

Is that really no solution to do that on linux?
"erik" <erik@geenspam.vanwesten.net>
???????:419dc958$0$78738$c5fe704e@news6.xs4all.nl. ..

Exim can restrict on a per-message, per-mailbox, per-domain, per-user
basis. Pretty much whatever you want. Depending on how complex your
setup is, I would probably just store the limits in a mysql database or
flatfile, and query it inside a router (for message size) or transport
(mailbox size.)

There is a global limit on message size that you can set too.

Unlike sendmail and postfix, Exim configuration is stored in one place
in fairly readable syntax. There is also many ways and places you can
enforce these checks.

NOT TESTED router example:

reject_if_too_big:
driver = redirect
domains = customer.domain.com
condition = ${if > \

{$message_size}{${lookup{$local_part}lsearch{/etc/messagelimit}{$value}{50M}}}
\
{yes}{no}}
allow_fail
data = :fail: message too big.

/etc/messagelimit would contain lines like:
mike 10M
jerry 5M

If the user isn't in the file the limit would be 50M.

Again, that is not tested and may have syntax errors or something, but
the concept is valid.

The Exim faq even has an entry that can enforce the max size message
that users can SEND as well (see Q0719)


To get help with the details, I would suggest the exim-users mailing
list.