Re: How to allow relaying per domain?

2020-09-28 Thread Viktor Dukhovni
On Thu, Sep 24, 2020 at 04:42:22PM +0200, Hans van Zijst wrote: > I'm building a relayhost that should accept e-mail from a whole bunch of > internal mailservers, and relay it to the Internet, after scanning, > DKIM-signing and rate limiting. > > But I don't want to give Postfix one list of all

Re: How to allow relaying per domain?

2020-09-28 Thread Dominic Raferd
What about having multiple different smtpd services on different ports; then set up the LAN mail agents to send to whichever port is appropriate for their access, and you can have entirely bespoke settings for each one. On Mon, 28 Sep 2020 at 10:02, Hans van Zijst wrote: > > Hi Nick, > > Thanks

Re: How to allow relaying per domain?

2020-09-28 Thread Hans van Zijst
Hi Nick, Thanks for your reaction, it gave me some food for thought. I can see how this works for a limited number of servers, but unfortunately (?) our environment is a lot bigger than that. I think my solution is to write a policy service: http://www.postfix.org/SMTPD_POLICY_README.html

Re: How to allow relaying per domain?

2020-09-27 Thread Nick Tait
Hi Hans. I'm not sure if there is an easier way, but one way to achieve this is with a restriction class per server. (BTW I don't know much about LDAP so the example below is based on files...) main.cf: indexed = ${default_database_type}:${config_directory}/

How to allow relaying per domain?

2020-09-24 Thread Hans van Zijst
Is it possible to let Postfix decide which hosts to relay mail for, based on the domain from which that mail is sent? I'm building a relayhost that should accept e-mail from a whole bunch of internal mailservers, and relay it to the Internet, after scanning, DKIM-signing and rate limiting. But I