opscode-cookbooks/postfix — pull request #38 by integrii (2013-08-22 23:24:32+00:00)
Title: Added ability to assume FQDNs for remote hosts on relays

When you setup a relay and remote hosts using it don't specify an FQDN in the from address, mail will bounce when it reaches most MTAs. To combat this, the append_dot_mydomain setting should be toggled to yes and the remote_header_rewrite_domain option should be used. The myorigin option only applies to email relayed from localhost. Mail relayed from remote hosts uses remote_header_rewrite_domain.