[Dbmail] Can not send mail out

[Jinsong Chen]

Hi,
I installed DBMail 2.0.4( I downloaded the pre-compiled executable file).
My system is FreeBSD 5.2 and MySQL 4.1.14.
Sendmail's version is 8.12.9
I did following configuration:

for freebsd.mc :
MAILER(local)
MAILER(smtp)
MAILER(dbmail)

for sendmail.cf added following line to the end:
#####  $Id: dbmail.m4,v 8.22 2001/11/12 23:11:34 ca Exp $  #####

Mdbmail,        P=/usr/local/sbin/dbmail-smtp, F=DFMSPhnu9, 
S=EnvFromSMTP/HdrFro
mSMTP, R=EnvToSMTP/HdrFromSMTP,
               T=DNS/RFC822/X-Unix,
               A=dbmail -d $u


for mailertable:
my.domain      dbmail: my.domain
then makemaps

after re-started the sendmail, can receive mail.
BUT, I can not send any message out, I got  following error message :
Sep 14 19:12:55 www sendmail[13073]: j8EJCepR013073: ruleset=check_rcpt, 
arg1=<q
[EMAIL PROTECTED]>, relay=[218.81.103.225], reject=450 4.7.1 
<[EMAIL PROTECTED]
om>... Relaying temporarily denied. Cannot resolve PTR record for 
218.81.103.225

if I add  "hotmail.com     RELAY" to access.db
Sep 14 17:10:05 www sendmail[12122]: j8EHA0hx012117: 
to=<[EMAIL PROTECTED]>, d
elay=00:00:00, xdelay=00:00:00, mailer=dbmail, pri=30417, 
relay=hotmail.com, dsn
=5.1.1, stat=User unknown
Sep 14 17:10:05 www sendmail[12122]: j8EHA0hx012117: j8EHA5hx012122: 
DSN: User unknown

(if I just use sendmail, everything is ok)...
Please help me.

thanks in advance.

Jinsong