Hi, recently I moved the server to a new IP. Everything is working OK except receiving emails. I searched in forum and I didn't find a solution.
Operating system Ubuntu Linux 10.04.1 Webmin version 1.540 Virtualmin version 3.84.gpl GPL
The emails remain in queue. MAILER-DAEMON "name@domain.com" [......] said: 450 4.7.1 Client host rejected: cannot find your hostname, ["INTERFACE EXTERNAL IP"] (in reply to RCPT TO command)
/etc/postfix/main.cf - seams to be OK ( mydestination & myhostname with FQDN /etc/postfix/virtual - contain all addresses /etc/hosts - contain the IP and FQDN
There is something I don't figure out, please can you help me? Thanks, Bogdan
seams that was an error in postfix config, the stand alone hostname was missing:
mydestination = primus.DOMAIN.com, localhost.DOMAIN.com, localhost
working config:
mydestination = primus.DOMAIN.com, localhost.DOMAIN.com, localhost, primus
I just had a similar problem (server not sending email after IP address change)...
Turns out, after I contacted my ISP to have reverse-DNS enabled/corrected for my new IP address, I suddenly got 100's of emails in the few minutes...
I had "reject_unknown_client_hostname reject_unknown_reverse_client_hostname" in the main.cf file.
Live and learn.