[Pkg-exim4-users] Some problems

[Yura]

Hi, All
I have problem sending mail.
The log is:
2006-10-11 10:14:38 1GXYIT-0002zl-Sd ** dialers at tdb.com.ua R=dnslookup 
T=remote_smtp: SMTP error from remote mailer after RCPT 
TO:<dialers at tdb.com.ua>: host gerakl.tdb.com.ua [194.44.55.9]: 504 
<phoenix>: Helo command rejected: need fully-qualified hostname

Thank you in advance.