Actually I do believe I have misunderstood the nature of mydestination, by putting my domain in there I think I'll stop the e-mail chain dead. Whoops.
http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall That appears to be the sort of thing I am looking for, wish I'd seen it before posting. Ah well. Paul Cocker Systems Infrastructure Support Network Administrator and Security Specialist -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Cocker Sent: 05 September 2008 12:00 To: [email protected] Subject: First Time Configuration assistance I'm setting up a postfix 2.3.3 mail server which is to be the primary outgoing mail server and act as a secondary incoming mail server for three domains (only one of which is of any real size). I haven't used postfix before so I'm wading through the configuration and documentation and without having any special requirements most of the defaults appear sane. So far as I understand it I will need to configure the following parameters: Mydestination - to allow it to collect mail on behalf of my domains Mynetworks - so it knows where internal mail will be coming from Both of those seem simple enough, my question is about having it as the secondary MX record. Is there a parameter you need to configure to tell postfix it is to pass e-mail to the top of the MX chain, or will it do a name lookup and discover this for itself? Is there anything else I need to take into consideration or configure? Beyond chroot that is, which is something I will investigate next. Many thanks, Paul Cocker TNT Post is the trading name for TNT Post UK Ltd (company number: 04417047), TNT Post (Doordrop Media) Ltd (00613278), TNT Post Scotland Ltd (05695897),TNT Post North Ltd (05701709) and TNT Post South West Ltd (05983401). Emma's Diary and Lifecycle are trading names for Lifecycle Marketing (Mother and Baby) Ltd (02556692). All companies are registered in England and Wales; registered address: 1 Globeside Business Park, Fieldhouse Lane, Marlow, Buckinghamshire, SL7 1HY. TNT Post is the trading name for TNT Post UK Ltd (company number: 04417047), TNT Post (Doordrop Media) Ltd (00613278), TNT Post Scotland Ltd (05695897),TNT Post North Ltd (05701709) and TNT Post South West Ltd (05983401). Emma's Diary and Lifecycle are trading names for Lifecycle Marketing (Mother and Baby) Ltd (02556692). All companies are registered in England and Wales; registered address: 1 Globeside Business Park, Fieldhouse Lane, Marlow, Buckinghamshire, SL7 1HY.
