Thanks a lot Wietse, for Postfix
and also for this very helpful reaction and good advice. It has worked, though not immediately. I had first also to put smtp_host_lookup on 'native, dns' (I did the same for lmtp_host_lookup, not sure that was needed). Everything started to go really well after I had also edited /etc/nsswitc.conf, by putting everything on 'files'. kind regards (en vriendelijke groet), Adri van Loopik. 2013/1/18 Wietse Venema <wie...@porcupine.org> > > Adri van Loopik: > > use a relayhost. This works perfectly, the Linux box can send mail > > indirectly - via the smtp server provided by my ISP - to internet > > addresses. > > > > But when relayhost is defined, mail to other hosts on my LAN does not go > > through. > > relayhost, as documented, sends mail that isn't for the machine > itself to the relayhost. > > However you can override relayhost, as documented, with transport_maps. > > So one example is: > > /etc/postfix/main.cf: > transport_maps hash:/etc/postfix/transport > relayhost = [smtp.isp.nl] > > /etc/postfix/transport > .localdomain smtp: > > (instead of localdomain specify your local domain name). > > http://www.postfix.org/postconf.5.html#relayhost > http://www.postfix.org/postconf.5.html#transport_maps > http://www.postfix.org/transport.5.html > > Wietse
