> On 9 May 2017, at 22:19, James B. Byrne <byrn...@harte-lyne.ca> wrote: > > > On Wed, May 10, 2017 00:48, Doug Hardie wrote: >> I have a situation that is most likely a problem with my understanding >> of postfix and not a code problem. I am getting ready to take over a >> domain name for mail service. A number of new addresses in that >> domain need to be forwarded to other mail servers. I setup postfix to >> do that and it worked fine. However, there is still some time before >> I actually take over the domain. In the meantime I was entering some >> of the addresses and forwarding addresses into the vmail alias file. >> Each entry was preceded by "# ". My understanding was that lines >> starting with a # would be ignored. I did not bother to run postmap >> as it would do nothing useful. >> >> Several hours later I noticed that no outgoing mail was going out. >> Everything was receiving an error in maillog: >> > > If the source file has an mtime later than the resulting map file then > postfix will treat this as an error condition. At least this is my > experience so far.
That is what I noticed although I didn't expect postfix to do anything different in that situation. > If you check your maillog file you will find > entries if this is the case. Several hours after I changed the file, those messages began to appear. > Further, if you rebuild a mapfile then > you must reload postfix for it to recognize the changes contained > therein. That doesn't seem correct. I just ran another test and added a valid forward in vmail_alias file and ran postmap on it. Then I sent to that address and sure enough it was delivered to the forward address. I did not run postfix reload or restart the service.
