> Hi All, > > > Customer asked us to relay their mails to a specific smtp server. > > Actually they provided 6 possible destination servers. > > > When add them to sender_dependent_relayhost_maps postmap complains that there > are duplicate entries: > > @foo.bar [mail1.whatever]:123 > @foo.bar [mail2.whatever]:123 > @foo.bar [mail3.whatever]:123 > etc. > > > How can I solve this?
Create mail.whatever with A or CNAME records that point to each server. Then you use: @foo.bar [mail.whatever]:123
