[Dovecot] is reverse dns down ?

[Voytek Eymont]

Hi guys, is that a genuine email from the list, I'm getting it rejected as
it's missing reverse hostname:

May  2 21:21:41 postfix/smtpd[18033]: NOQUEUE: reject: RCPT from
unknown[194.89.34.45]: 450 4.7.1 Client host rejected: cannot find your
reverse hostname, [194.89.34.45]; from=<dovecot-bounces at dovecot.org>
to=<voytek at sbt.net.au> proto=ESMTP helo=<mkentta.iki.fi>

# host mkentta.iki.fi
mkentta.iki.fi has address 194.89.34.45
mkentta.iki.fi mail is handled by 10 mkentta.iki.fi.
mkentta.iki.fi mail is handled by 100 smtp.menturagroup.com.

# host  194.89.34.45
Host 45.34.89.194.in-addr.arpa. not found: 3(NXDOMAIN)




-- 
Voytek