Re: [Exim] How to get Exim 4.04 to verify that a sender come…

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Autor: Suresh Ramasubramanian
Data:  
A: Tim Sexton
CC: exim-users
Assumpte: Re: [Exim] How to get Exim 4.04 to verify that a sender comes from our domain
Tim Sexton <tsexton@???> writes:

> I would like to set up Exim to verify that all senders come from our
> domain, and refuse the relay if they don't. Is there a way to make it
> verify the that the sender's address is *younglife.org? I have read the
> docs, but still can't figure out how to make it reject a relay based on
> a sender address not meeting a spec.


The best thing you can do (given things like mailing lists which rewrite
the return-path) is to implement smtp auth for people to send mail out
of your domain.

If you want to control the envelope-from, force your users to use
something like a webmail interface.

          -srs


--
Suresh Ramasubramanian  <---->  mallet <at> efn dot org
EMail Sturmbannfuhrer, Lower Middle Class Unix Sysadmin
[Linux One Stanza Tip]    From : <bish@???>
LOST #010     -**< Sub : User CDROM mount >**-
This is a security issue ....  NOT recommended unless it is on
a stand alone box.  Make the following changes to  /etc/fstab,
(where the mount point is /cdrom).  Then, $mount /cdrom ... as
an user will do the trick
/dev/cdrom /cdrom iso9660 defaults,nosuid,nodev,noauto,user 0 0