Hello all!

I have problem with one incoming mails from one server. It is very importnant!
postfix reject mails sent from this domain mailserver because, it has wrong defined mx records
i browse forums i found that i need do this
"You need to turn off the appropriate DNS/HELO check(s). Postfix is rejecting the mail because the MX record doesn't match the hostname the server announces itself as."
But i cant do that because domain we host has very very much spam.
I need help where to add in postix settings that postix dont scan/check from this domain e-mails for mx records.

log part:

Feb 26 11:55:48 mail postfix/smtpd[31847]: NOQUEUE: reject: RCPT from mail.domain.com[xx.xxx.x.xx]: 450 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Feb 26 11:55:48 snmail postfix/smtpd[31847]: disconnect from mail.domain.com[xx.xxx.x.xx]
Feb 26 11:56:03 snmail zmtomcatmgr[32097]: status requested
Feb 26 11:56:03 snmail zmtomcatmgr[32097]: status OK
Feb 26 11:55:48 snmail last message repeated 2 times

fc5 Release 4.5.5_GA_838.FC5_20070503175107 FC5 FOSS edition

Please help. I'm newbie with postix.