PROBLEM: lowest numbered MX record points to local host

[TestUser]

I have on server A WEB, on server B i have emails
everithing is working OK,
except when i send email from php script from server A,
then the mail is frozen and in
/var/log/exim/mainlog i see entries like this

2014-02-28 14:45:42 1WJNQC-0008AK-PF lowest numbered MX record points to local host: domain.onmyserver
2014-02-28 14:45:42 1WJNQC-0008AK-PF == [email protected]rver R=lookuphost defer (-1): lowest numbered MX record points to local host


i have checked and for this domain i have mx 0 set
any idea?

 

[TestUser]

and YES on server A where WEB is i have unchecked "let this server handle emails"
and YES on server B wehre emails are i have checked "let this server handle emails"

 

[scsi]

Well look at the mx records then. You have something wrong with your mx records. Give us your real domain if you want any help.