On Wednesday 26 October 2011 18:09:56 René Fournier wrote:
> Now, I've found lots of tutorials on Postfix that cover a range of
> topics, seemingly for moderate-to-complex needs. Mine are pretty
> simple. I have a server that simply needs to send out notification
> emails on a regular, high-volume basis. I would like to avoid
> blacklists and spam algorithms (since my application is not spam),
> and therefore do things "the right way" -- but without adding
The best "trick" to avoid blacklisting is just that: do it right.
Don't send unsolicited bulk mails. Send out one confirmation mail;
don't send anything else if that is not confirmed.
Some folks think that IP-address-hopping is a good way to avoid
listings. On the contrary: you want to build and maintain a good
reputation. Sign up with DNSWL.org.
> unnecessary complexity (virus scanning, web mail (there are no
> user accounts here), etc.).
>
> Any suggestions where to start? I suppose there's a bit of DNS
> stuff I need to do to in terms of pointing an MX record at this
MX is only for receiving mail, but of course you are right: there can
be no such thing as "outgoing-only mail." You need to publish and
monitor an abuse address. You probably WILL get a few complaints, no
matter how well you do things "the right way".
(The abuse address can be hosted elsewhere, but you should get and
read mail for postmaster@ and abuse@ your $myhostname anyway.)
A sending host needs forward-confirmed reverse DNS, and that PTR name
should be your $myhostname in Postfix. The IP address must be "clean"
and hosted by an upstream provider with good anti-abuse policies.
> machines public IP address, etc. Anyway, any suggestion are highly
> appreciated. Thanks!
The ESP suggestion was very good. "Doing it right" in the email world
is very difficult. If money is at stake, spend a little of it. It may
end up saving you far more than you spend!
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