>Assuming that you are an ISP, what does an example config file look like >for handling multiple virtual domains? virtuals are well supported in postfix, even 1000's of them, address or domain level. virtuals are kept in an indexed file for fast access. >I know each virtual's MX record would point to the new 'relay', yes, > but on the relay, what needs to be added each time your company gets a > new client >(virtual domain)? as for the virtuals, there a two files that control relaying, also indexed for speed. relayed_domains.map (table for mapping domains to actions) with lines like this: dgsoft.com RELAY this line accepts dgsoft.com acceptable, and RELAY says relay it (could DEFER it, etc, etc) transport.map (table for mapping domains to transport protocols: smtp, uucp, etc) dgsoft.com smtp:[xxx.xxx.xxx.xxx] This line says sen dgsoft.com traffic over smtp to the ip address, which for Imail people would be Imail ip's (avoids DNS lookups). If you're client was a dedicated line client with his own mail host, then you'd point the smtp:[] to that client's mail host ip. after these .map files are edited as text, postfix has a little ulitity that will produce the accompanying index file. So each new virtual requires a new line in the relayd_domains and transport files. Len Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list.
