Re: Migrating Postfix Server to New IP Block and Reverse DNS Issues

2020-03-30 Thread Asai
I don't understand this. What does it mean to point traffic (from the internet? from the local network?) to a load balancer for LAN (from the LAN? to the LAN?) or WAN (from the WAN? to the WAN?) traffic. Postfix supports load balancers for receiving mail. Postfix does not support load balancer

Re: Migrating Postfix Server to New IP Block and Reverse DNS Issues

2020-03-30 Thread Wietse Venema
Asai: > > If you can't do this without losing the remote SMTP client IP > > address, your options are: > > > > - Install HAproxy on the "router", configure HaProxy to forward > >mail to Postfix, and configure Postfix to use > >"smtpd_upstream_proxy_protocol = haproxy". > > > >With this,

Re: Migrating Postfix Server to New IP Block and Reverse DNS Issues

2020-03-30 Thread Asai
If you can't do this without losing the remote SMTP client IP address, your options are: - Install HAproxy on the "router", configure HaProxy to forward mail to Postfix, and configure Postfix to use "smtpd_upstream_proxy_protocol = haproxy". With this, Postfix CANNOT receive direct SMTP

Re: Migrating Postfix Server to New IP Block and Reverse DNS Issues

2020-03-30 Thread Wietse Venema
Asai: > Greetings, > > We're in the process of migrating our server to a new IP address block > but we're running into issues where reverse DNS checks are causing some > problems.? I will outline in brief here: > > * We're moving our email server to a new router with a new IP block > * In o

Migrating Postfix Server to New IP Block and Reverse DNS Issues

2020-03-30 Thread Asai
Greetings, We're in the process of migrating our server to a new IP address block but we're running into issues where reverse DNS checks are causing some problems.  I will outline in brief here: * We're moving our email server to a new router with a new IP block * In order to do this in a g