On 2 Aug 2001 07:44:39 +0200, Marco van Lienen <marcovllordsith.net> wrote:

> I'm running the latest Postfix-release (Postfix-20010228-pl03) on a
> Solaris 7 box.

The latest is pl04 :)

> The temporary workaround that we want to install is by adding an entry in t=
> he transport map to route the mail to another box that doesn't have an entr=
> y in DNS, that's specifically been setup to receive their mail.

Good idea. Then replace br0ken box by Postfix :)

> I know that I can specify a domain in the transport map and have all the ma=
> il for it send to it via SMTP without performing MX lookups if I specify th=
> e new MTA between []s. (foo smtp:[name.of.new.mta])
>
> But what can I do if the company runs about thousands of domains?

Use a regular expression transport_map.
Or use a script to take their domain list an generate a transport_map
from it. They do have a list, do they?

> Is it the right way to go?=20

Yup.

> Does Postfix resolve all mail always via MX lookups.

Well, it's one of the fundamentals of how mail works. Except for
explicit transport_maps entries.

> Eventhough I have hosts: files dns in my nsswitch.conf, Postfix still deliv=
> ers the mail to the original MTA that's primary MX for the domains.

Can /etc/hosts provide MX records?

> Doesn't Postfix have an option not to try to deliver the mail by performing=
> MX lookups all the time?

Yes. "disable_dns_lookups = yes". But I don't know if it will deliver
at all then.

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