For years we have used "MaxMessageSize" to limit the maximum size of
email passing through our service. We are mostly happy with this, but
there has always been a constant small trickle of well-founded requests
to be able to relax this for some users or for some of our domains.

Intuitively I feel that the "access" map could be the place to apply the
default and to handle such excpetion requests (replacing the blanket
"MaxMessageSize"). But I don't see any hooks or tags etc. to handle this.

Is it possible? If so, how? (Documentation links etc. would be fine.)


--

: David Lee I.T. Service :
: Senior Systems Programmer Computer Centre :
: Durham University :
: http://www.dur.ac.uk/t.d.lee/ South Road :
: Durham DH1 3LE :
: Phone: +44 191 334 2752 U.K. :

Anyone on thoughts on what follows? Thanks in advance.

> For years we have used "MaxMessageSize" to limit the maximum size of
> email passing through our service. We are mostly happy with this, but
> there has always been a constant small trickle of well-founded requests
> to be able to relax this for some users or for some of our domains.
>
> Intuitively I feel that the "access" map could be the place to apply the
> default and to handle such exception requests (replacing the blanket
> "MaxMessageSize"). But I don't see any hooks or tags etc. to handle this.
>
> Is it possible? If so, how? (Documentation links etc. would be fine.)

--

: David Lee I.T. Service :
: Senior Systems Programmer Computer Centre :
: Durham University :
: http://www.dur.ac.uk/t.d.lee/ South Road :
: Durham DH1 3LE :
: Phone: +44 191 334 2752 U.K. :

David Lee wrote:

> Anyone on thoughts on what follows? Thanks in advance.

[Different MaxMessageSize for different users]

You could set MaxMessageSize very high, and then use a milter
to reject oversized messages based on sender/recipient combination.
The milter can reject at the MAIL FROM: stage (if the SIZE=xxx ESMTP
parameter is given) or after DATA (trickier if you have multiple
recipients.)

Regards,

David.

On Fri, 29 Sep 2006, David F. Skoll wrote:

> David Lee wrote:
>
> > Anyone on thoughts on what follows? Thanks in advance.
>
> [Different MaxMessageSize for different users]
>
> You could set MaxMessageSize very high, and then use a milter
> to reject oversized messages based on sender/recipient combination.
> The milter can reject at the MAIL FROM: stage (if the SIZE=xxx ESMTP
> parameter is given) or after DATA (trickier if you have multiple
> recipients.)

Thanks, David.

Down the years, I've been able to avoid milters so far.

I was speculating more towards something with "check_compat" and
"${msg_size}" (or should that be "$&{msg_size}"?) Might something be
possible there, I wonder?

--

: David Lee I.T. Service :
: Senior Systems Programmer Computer Centre :
: Durham University :
: http://www.dur.ac.uk/t.d.lee/ South Road :
: Durham DH1 3LE :
: Phone: +44 191 334 2752 U.K. :