use two different configs in one postfix, is it possible?

Question

I'm wondering if is it possible to specify another main.cf for the configuration of smptd service in another port paired with normal config in standard port.

I know that is it possible to override main.cf settings in master.cf using the -o <key>=<value> parameter for smtpd service definitions but I'm asking for a way to directly tell to smtpd to read another main configuration file.

Can it be done?

Why are you trying to do this? You could always make a link to a file (`ln`). Would that suffice? — Belmin Fernandez, Jul 03 '14 at 13:21
No, that not suffice. I'm trying to keep old config in port 25 and new config in 2525 — theist, Jul 04 '14 at 07:11

score 1 · Answer 1 · answered Jul 03 '14 at 14:30

1

A quick look through the source code leads me to believe that this isn't possible with the native distro package.

The filename main.cf is hard-coded in several places.

You could try modifying the source before compiling it (sed -ri 's/main.cf/mymain.cf/') but I doubt that'll work without a hitch.

TL;DR: Make a file link (ln).

answered Jul 03 '14 at 14:30

Belmin Fernandez

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No, It is not just keep the config in another file. I want different configs on different ports, but thanks for the code review :). It is a good way to understand what can be done – theist Jul 04 '14 at 07:14

score 0 · Answer 2 · answered Jul 03 '14 at 15:11

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http://www.postfix.org/MULTI_INSTANCE_README.html describes how to use postmulti(1).

answered Jul 03 '14 at 15:11

mschuett

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score 0 · Answer 3 · answered Jul 03 '14 at 23:35

Postfix uses two hard-coded filename for its config main.cf and master.cf (See @Belmin answer).

If your purpose is running postfix via cli with specific file configuration (like ./someprograms -c myconfigfile.cf), you can use -C parameter. Instead a file name, you can specify a directory where main.cf and master.cf reside. So if you have main.cf and master.cf inside a directory /etc/anotherpostfixconf/, then you can start posfix by

postfix -C /etc/anotherpostfixconf/

See Postfix manual - postfix(1) for further explanation.

use two different configs in one postfix, is it possible?

3 Answers3