Autor: Frank S. Bernhardt Datum: To: exim-users Betreff: Re: [Exim] Domain literals: weighing up the arguments
I've been following this thread with great interest.
For all the machines that I've got using Exim, I've turned off IP
literals with no apparent detrimental results; until now.
I have in the last week just installed Exim at a newly inherited
customer, replacing a M$ Exchange server that was giving them nothing
but trouble and that had been recently compromised (again). Apparently
having MSCE after your name is no guarantee that you know how to set up
a mail server (notice the lack of these 4 letters after my name).
Anyway, everything was running just fine until I noticed an e-mail
indicating that the domain name had been black listed by njabl.org. This
happened because of the Exchange server compromise. In trying to get the
domain de-listed I found that the listing site needed to send an e-mail
to postmaster@[#.#.#.#]. If it could not reach this mail-box, the site
would remain on the black list. Period.
So given everything that has been posted on this thread, I have at least
one concrete reason to allow at least postmaster@[#.#.#.#]. That is,
when replacing a f%^&#@ up Exchange server with a real MTA, you need a
way for RBL's to contact you in order to get your site de-listed.
--
Regards
Frank S. Bernhardt
b.c.s.i.
14 Halton Court
Markham, ON.
L3P 6R3
