sendmail server too slow

["Davi Leal" <david.leal@ene.es>]

Hi,


The problem is that connecting from 80.25.136.215 to the 194.224.7.3 SMTP
server takes 25 seconds to show the 220 line. Note the FORGED tag.

$ telnet 194.224.7.3 25
Trying 194.224.7.3...
Connected to 194.224.7.3.
Escape character is '^]'.
220 excalibur.ene.es ESMTP Sendmail 8.12.2/8.12.1/Debian -5; Tue, 3 Sep 2002
15:16:59 +0200; (No UCE/UBE) logging access from:
[80.25.136.215](FORGED)-80-25-136-215.uc.nombres.ttd.es [80.25.136.215] (may
be forged)
quit
221 2.0.0 excalibur.ene.es closing connection
Connection closed by foreign host.
$


The entry in the /var/log/syslog file in the SMTP server is:

Sep  3 15:17:41 excalibur sm-mta[27547]: g83DGxae027547:
80-25-136-215.uc.nombres.ttd.es [80.25.136.215] (may be forged) did not
issue MAIL/EXPN/VRFY/ETRN during connection to MTA


Note that connecting from another machine, located in the same LAN than the
SMTP server, shows the "220 ..." line immediately, and without the FORGED
tag.

$ telnet 194.224.7.3 25
Trying 194.224.7.3...
Connected to 194.224.7.3.
Escape character is '^]'.
220 excalibur.ene.es ESMTP Sendmail 8.12.2/8.12.1/Debian -5; Tue, 3 Sep 2002
15:44:53 +0200; (No UCE/UBE) logging access from:
rambo.ene.es(OK)-root@rambo.ene.es [194.224.7.2]
QUIT
221 2.0.0 excalibur.ene.es closing connection
Connection closed by foreign host.
$


I don't understand the 'FORGED' issue. Anyway, ... On the client machine, I
get the below information. Note that the hostname does not correlate with
the dns domain name. Any idea will be welcome.
$
$ host 80.25.136.215
Name: 80-25-136-215.uc.nombres.ttd.es
Address: 80.25.136.215
$
$ hostname
dIII
$
$ dnsdomainname
telefonica.net
$


Regards,
Davi Leal