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20.7 Legacy Series / sending mail from dmz with nated public ip does not work
« on: February 08, 2021, 06:16:17 pm »
I have a dmz and there two nameserver and a mail server. Receiving mails on postfix works, but not sending. Everythime I try to send a mail with telnet, I get on the destination mail server an error, that the mail is rejected due to cannot find your reverse hostname [x.x.x.x]. The x.x.x.x address is the adress of the bridge from the isp, but there should be the public address from my mail server.
I added virtual ip interfaces for the public ip addresses and then a have firewall rules and nat port forwarding (forwarding dmz ip address to publich ip address).
How can I achieve that outgoing mail has its own public address and not the public address from the isp brdige?
I added virtual ip interfaces for the public ip addresses and then a have firewall rules and nat port forwarding (forwarding dmz ip address to publich ip address).
How can I achieve that outgoing mail has its own public address and not the public address from the isp brdige?