fastcgi php mail(); function.No work.

[kotel]

I have:
Exim 4.68
Named 9.3.4
dovecot 1.0.10
php5
Apache/2.2.6

OS :FreeBSD 6.2 (32 bit)
resolf.conf - ok.
MAIL IS WORK BY SMTP/POP3 protocols!

When i try mail(); function (php installed as fastcgi) ,she dosn't work!And don't give any errors.
I try update exim.conf - no result

In logs i have:
[email protected] R:lookuphost defer (-1): host lookup did not complete

 

[kotel]

I have solved this problem , by install apache 1.3