I will try to use postfix forwarder package. What can I use as anti-spam with postfix?
I tried with Firewall rules for the ports IMAP, POP3 and SMTP individually defining them but when mails sent from the it shows that the mail server ip was not 94.55.x.x instead it took the firewall ip as 94.54.x.x. How can I solve the problem.
If I create the virtual ip with the External email server ip 94.55.x.x and then make individually port forwarding for IMAP, POP3 and SMTP will it work? what do you think?
Thanks for your advice.