Re: relay_transport backup/secondary

2018-01-14 Thread Wietse Venema
lutz.niede...@gmx.net: > Now we have two links to our internal server and we observed that > it was the right decision to have those two links. Our internal > server got two IP addresses (one per link) and is listening on > both of them for connections from the MX servers. But we have no > clue how

Re: relay_transport backup/secondary

2018-01-14 Thread Viktor Dukhovni
> On Jan 14, 2018, at 8:53 AM, lutz.niede...@gmx.net wrote: > > we are using two external MX servers in separate data centers. Both of them > are running postfix since many years without problems. > > Internally we do have a postfix server as final destination for all domains. > On each MX

relay_transport backup/secondary

2018-01-14 Thread lutz . niederer
Hi,   we are using two external MX servers in separate data centers.  Both of them are running postfix since many years without problems.   Internally we do have a postfix server as final destination for all domains.  On each MX we have defined a relay_transport with specific settings that rela