Wietse Venema wrote: > Helmut Schneider: > [ Charset ISO-8859-1 converted... ] > > Hi, > > > > I'm running postfix as a relay connected via VPN. If the VPN is down > > mails are rejected: > > > > relay=none, delay=0.09, delays=0.06/0.02/0.01/0, dsn=5.4.4, > > status=bounced (Host or domain name not found. Name service error > > for name=EXCHANGE01 type=AAAA: Host not found) > > It's status=bounced (dsn=5.4.4) because Postfix received a DNS > NXDOMAIN (name does not exist) response for the name 'EXCHANGE01'. > > > Is there a way to change the dsn to 4xx and deliver it when the VPN > > is up again? > > http://www.postfix.org/postconf.5.html#default_delivery_status_filter > Look under the examples for smtp_delivery_status_filter. Here is > an untested variant that should work. > > /etc/postfix/main.cf: > smtp_delivery_status_filter = pcre:/etc/postfix/smtp_dsn_filter > > /etc/postfix/smtp_dsn_filter: > /^5(\.\d+\.\d+ Name service error for name=EXCHANGE01/ 4$1
Works like a charm, thank you!
