I WAS having slow responding mail servers . and the report rightly said :
WARN Multiple MX records WARNING: You only have 1 MX record. If you primary mail server is down or unreachable, there is a chance that mail may have troubles reaching you.
FAIL Reverse DNS entries for MX records ERROR: None of your mail server(s) seem to have reverse DNS (PTR) entries (I didn't get any responses for them). RFC1912 2.1 says you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry.
so now could someone give some advice on the steps to advance .. now ?