Nitin N:
> Dear Wietse,
>
> I managed to get my multi-domain setup running with postmulti. However, I
> am stuck with a new issue. I have a single NIC that I wanted to use across
> each postfix instance. So I created IP aliases and used them one for each
> instance and set up the default instance as a nullclient.
Rumor has it that Linux has more than one way to assign IP addresses
to an interface: the historical way and the systemd way. Check your
system documentation, or use a web search engine.
> But I am noticing that if I try to telnet at port 25 for the ip alias
> instances it refuses to connect. So my question is: does postfix work with
> IP aliases or does it need physical NICs or each instance? I have set each
> instance to have its own IP alias as the only inet_interface.
Before you post more questions:
- Can you determine that Postfix even LISTENS on those IP addreses?
Use lsof to find out.
- Can you determine that you can telnet to those IP addresses from
the server that Postfix runs on?
- Can you determine that you can telnet to those IP addresses from
outside the server?
Wietse
