owner-postfix-us...@postfix.org wrote on 07/02/2018 09:58:57 AM: > From: Noel Jones <njo...@megan.vbhcs.org> > To: postfix-users@postfix.org > Date: 07/02/2018 09:59 AM > Subject: Re: Reject unknown users, even when sent from 'mydomain' > Sent by: owner-postfix-us...@postfix.org > > On 7/2/2018 10:20 AM, dur...@mgtsciences.com wrote: > > If my postfix server is 172.23.93.188, and my Domino server is > > 172.23.93.10. > > The router forwards all mail to 188. The postfix server must send > > it to 10 > > for delivery. What is needed to allow this 'relaying' from 188 to > > 10 without > > becoming an open relay? > > > > Durwin > > > > This is what we refer to as an email firewall or gateway. > > A basic, annotated example of this can be found here: > http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall > > The key parts are that the internal domain should be listed in > relay_domains (not mydestination), and valid recipients should be > listed in relay_recipient_maps.
I guess I still got it wrong. I looked closer at what you said about relay_domain. I will try that. Thank you. > > It's also possible for postfix to build a list of valid recipients > automatically *if* the internal server rejects unknown recipients > during the SMTP transaction. > > Other relevant links: > http://www.postfix.org/ADDRESS_CLASS_README.html > http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient > http://www.postfix.org/documentation.html > > > > -- Noel Jones This email message and any attachments are for the sole use of the intended recipient(s) and may contain proprietary and/or confidential information which may be privileged or otherwise protected from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient(s), please contact the sender by reply email and destroy the original message and any copies of the message as well as any attachments to the original message.
