On Tue, May 29, 2007 at 10:02:28AM +0530, Biju Abraham N. wrote:
> Hi,
>
> I am using a Debian Etch release with Exim4 4.50. We are getting mails on
> SMTP and to some locally defined mail aliases in /etc/mail/alias files. Is
> it possible to block external mails to these aliases or could some show
> which documentation to read up on this?
Just redirect the mail to an administrative user on the system using the
same /etc/aliases file.
Here is an example from one of our mail servers:
# Mail manager aliases
mailer-daemon: postmaster@???
postmaster: postmaster@???
# Other miscellaneous system aliases
sysop: sysadm@???
ftp: ftpadm@ftp.sun.ac.za
news: sysadm@???
mail: postmaster@???
info: help@???
hostmaster: sysadm@???
On Debian you can use /etc/email-addresses to rewrite the From-adresses
to valid ones.
Regards
Johann
--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"Let no man despise thy youth; but be thou an example
of the believers, in word, in conversation, in
charity, in spirit, in faith, in purity."
I Timothy 4:12
