* Steve Heaven <st...@thornet.co.uk>: > > We have a client who has an Exchange server on the end of two xDSL > lines. We currently deliver via SMTP to the IP address of one of the > lines. We would like to have postfix try the other line if the xDSL on > the first one is down. > > Looking at the docs fallback_rely would seem to do the trick. > > Do I put in the transport map: > > clientsdomain.co.uk smtp:[xxx.xxx.xxx.xxx] > clientsdomain.co.uk relay:[yyy.yyy.yyy.yyy] > > where x is the main line and y is the fallback line?
No. Please note that you're not even using (smtp_)fallback_relay. It's probably easier to set up an (internal) MX record with the appropriate preferences: clientsdomain.co.uk MX 10 xxx.xxx.xxx.xxx clientsdomain.co.uk MX 20 yyy.yyy.yyy.yyy -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebra...@charite.de | http://www.charite.de