On 11/1/2017 8:41 PM, J Doe wrote: > Hello, > > I currently have my server configured to perform virtual domain hosting. It > forwards mail addressed to addresses for my virtual domain (ex: example.com), > to Gmail accounts. > > Mail —> u...@example.com —> u...@gmail.com > > I was reading more about the relay_domains parameter in “man 5 postconf”. It > states: > > “[specifies] destination domains (and subdomains thereof) this system > will relay mail *TO*” > > I note that on Postfix 3.0 and later (my server is Postfix 3.1.0), this value > defaults to an empty value. When I specify “postconf | grep -i > relay_domains”, I note that if the compatibility_level is 2 or higher (which > my server is configured to), the value defaults to $mydestination.
Yes, "relay_domains=$mydestination" was intended to mirror (historical) behavior of sendmail(TM). It has also been a source of confusion, so the default was changed to empty some time ago. > Would I not have to specify the Gmail DNS names in relay_hosts ? Should I > explicitly configure that ? Not unless you own the gmail.com domain. ;) IIRC you're using virtual_alias_maps to rewrite local addresses to gmail addresses. If that's right, your domain should be listed in virtual_alias_domains, with the user mappings listed in virtual_alias_maps. This is covered in ADDRESS_CLASS_README and the config examples. http://www.postfix.org/ADDRESS_CLASS_README.html http://www.postfix.org/STANDARD_CONFIGURATION_README.html http://www.postfix.org/documentation.html -- Noel Jones
