On Wed, June 13, 2012 12:23, Wietse Venema wrote: > James B. Byrne: >> Given the requirement for the transport map on the MX hosts does the >> relay_domains value need to be set at all? > > If the destination is not on the machine itself, the destination > should be listed in relay_domains.
Thank you for the clarification. I understand from reading the documentation all that relays_domains contains is a list of those domains for which Postfix will accept mail and either deliver or forward. My confusion arises from our requirement to use transport maps to effect forwarding to a specific host without using MX data. > transport_maps is not a substitute for relay_domains I will retain the relay_domains list as you advise. However, it appears that transport map configuration nonetheless works for domains without an entry in the relays_domains list, thus my inquiry. Is this simply happenstance? Is there some exception or failure condition that may occur if a domain listed in the transport map as using the relay transport does not also have an entry in the relay_domains list? > There are some useful hints and tips in the firewall/gateway > example in STANDARD_CONFIGURATION_README.html I have gone through this reference (among many others) repeatedly this past few weeks. I fear I presently lack the experience to relate much of what I read there to what actually is going on. I have managed to get the new setup working insofar as I can tell. Now I am going over everything I have done in an attempt to understand which bits were necessary and which were not. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3
