Re: [Pound Mailing List] Routing mail servers with pound?

W dniu 16.06.2017 o 22:19, Christian COMMARMOND pisze:
> Hello,
>
> I had a look to haproxy, I don't see what I am looking for anywhere,
> just load balancing of one mail.domain.com <http://mail.domain.com> to
> several servers. 
> sltd, just one page of doc, which says: sltd daemonizes multiple slt
> instances to accept TLS/SSL connections on multiple ports, but I have
> only one.
>
> I have one IP, but two mails servers: domain1.com <http://domain1.com>
> and domain2.com <http://domain2.com>. if someone sends an email to one
> of these, they will try to connect to the IP on the same port. Am I
> right? I thought that the communication is full text and that it
> contains the full email address, so, we should be able to route this
> communication to the good mail_serveur? 
>
> But is looks like this is not possible. And maybe, I should just stop
> now...
>
> Can someone points me to a page with the solution? I am sorry, I am
> not an email expert. 
>
> And to user two IP would need that I setup something to manage two
> connections on my network, which is out of my capabilities. (I would
> like, but I do not know where to start, and how to do it without
> breaking what I have)...
It's not simple as http load balancing.
Trivial solution - is puting postfix or something on front of this
mailservers. And in it - rewrite domains to specific servers. For
example in /etc/postfix/transport:

domain1.com smtp:server-of-domain1
domain2.com smtp:server-of-domain2

It will work for simple cases, but.. what will happen when destination
e-mail doesn't exists? your balancer will accept it, try to send to
server-of-domain1, and then when it will be not received - generate
bounce message.



-- 
Regards,
Andrzej 'The Undefined' Dopierała
http://andrzej.dopierala.name/