Thanks. My default as shown by postconf -d is…
_______________________ … which seems reasonable, if perhaps irrelevant. Each of my hosts is meant to receive mail only for its virtual_alias_domains. I'm not entirely clear if its even necessary to receive under any of the mydestinations. My goal is simply to have each host receive mail for its virtual_alias_domains, act as MX backup for its relay_domains, and reject everything else. I'm still unclear why this requires using virtual_alias_maps to map every address for which a given host isn't primary to itself, but without entires like… br...@sourdough.com br...@sourdough.com …hosts decide they're responsible for the domain and keep all mail sent to it for themselves, rather than relaying it. -Bryan _______________________ On Nov 9, 2010, at 7:54 PM, Wietse Venema wrote: > /dev/rob0: >> On Tue, Nov 09, 2010 at 03:13:01PM -0800, Bryan Harrison wrote: >>> Viktor: >>>> Perhaps the original domain is incorrectly listed in >>>> $mydestination >>> >>> I have no mydestination entry. Can I use one to force the correct >>> behavior? >> >> Not listing mydestination in main.cf means you get the default >> setting for mydestination, which is rarely what people want for >> mydestination. That's a setting which should not be left to chance >> (the vagaries of gethostbyname() resolution.)[1] > > To avoid brain-dead failure modes, the mydestination default uses > gethostname(2) (the node name in the local kernel) not gethostbyname(3) > (some remote lookup service). Using gethostbyname(3) would cause > Postfix processes to hang when the network is down. > > Wietse > >> You might benefit from review of the Basic Configuration README. >> Check your settings for those configuration items. >> >> >> [1] That might sound like a criticism of the default for >> mydestination, but it is not. The default is as good as >> possible, but human supervision is necessary to set up a MTA. >> -- >> Offlist mail to this address is discarded unless >> "/dev/rob0" or "not-spam" is in Subject: header >> >> >
