On 11/21/2014 07:02 AM, Wietse Venema wrote: > /etc/postfix/master.cf: > forced-ipv4 unix - - n - - smtp > -o inet_protocols=ipv4 > > /etc/postfix/transport: > google.com forced-ipv4: > gmail.com forced-ipv4: > > /etc/postfix/main.cf: > transport_maps = hash:/etc/postfix/transport
Unfortunately the above solution assumes that all recipients that use the google MX servers will have email addresses with google.com or gmail.com domains. Unfortunately there is literally an endless number of domains that use the google MXes (google apps anyone?) so a solution that looks up the MX of the recipient domain and picks a transport based on that would be better. I'm not aware of a postfix setting that directly allows this and the best thing I can think of is a policy daemon that will look up the recipient MX and direct mail accordingly. Peter
