Mike A. Leonetti wrote:
I want to relay messages coming through a server with a dynamic IP
(Exchange) through my postfix.
My postfix
my smtpd_recipient_restrictions already has a
"hash:/etc/postfix/allowed_relays" option on it, and I've tried adding
the Dynamic DNS name that resolves to that IP address and put it in the
list but it still gave me an "relay access denied" error. Is there
another way to do it?
Thanks.
Commonly this is done us using SASL authentication, ideally with TLS for
added security. See the relevant documentation in
http://www.postfix.org/docs.html
The first round I used Cyrus SASL, but I went to dovecot with my last
upgrade and it was much less work to get running and has performed
reliably. With dovecot, you also install it with the dovecot pop/imap
server since they are integrated, but the SASL functionality is
available for other purposes.
Nataraj
