Here is a possible setup : (replace any AAA or BBB with correct Ip where AAA is you upstream MTA outgoing IP and BBB is xmail listening IP)
1 - Configure Xmail to listen ONLY on port 587 by changing xmail smtp binding in Cmd Line parameters : -SI BBB:587 This have two functions : a : Stop Xmail to listen to standard port 25 defeting many 'spammers' and 'viries' that try only on port 25 (see 2 to secure much more port 587 to stop 'intelligent spammers' that try also port 587) b : Help your customers to bypass some ISP blocking outgoing port 25 :) 2 - Add this line in server.tab file : "SmtpConfig-BBB,587" "[TAB]"MailAuth" This line force authentication on port 587, so only your customers (see 5) and you mx (AAA) (see 4) will be able to send to xmail (and be eventualy relayed). 3 - Add a dummy account in xmail for use by you mx (AAA) to do auth when sending to xmail (give it a complex name with a strong password :) ) 4 - Configure you mx AAA to forward mails to Xmail on port 587 with the good credentials created at point 3 5 - Ask ALL of your customers to replace smtp port 25 with 587 AND to configure authentication in they MUA for smtp (using they current pop3 email/login and password as credentials) 6 - If necessary, to force xmail to use mx AAA for outgoing mails put this unique line in smtpfwd.tab file : "*"[TAB]"AAA:25" (Change 25 by good port at mx AAA if different for outgoing mails) Doing this, ask xmail to send ANY outgoing mail to AAA I hope I didn't forget something :) Francis -----Message d'origine----- De: [EMAIL PROTECTED] A: [email protected] Date: 25/02/08 16:06 Objet: [xmail] Re: Lockdown xMail SMTP Hello al... How do I configure xMail so that it is locked down -- such that xMail will only accept eMail from authenticated eMail clients. In my case I have an upstream MTA that excepts mail from the outside world -- thus the IP address of this MTA is in the SMTPRELAY.TAB file. Thanks, Hal Dell Managing Partner ePodWorks.net, Inc. - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
