Thanks. And it appears that the postfix will work with MAPS too! Excellent. Is postfix better for some reason than sendmail? The only reason I would consider a UNIX install would be for relay use such as you are doing. We've tinkered a bit with RedHat and Sendmail but... ran out of 'play' time. -----Original Message----- From: Len Conrad <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Monday, March 20, 2000 8:51 AM Subject: Re: [IMail Forum] "IMGate" progress report: TGIMonday ! > >>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. > Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list.
