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)[EMAIL PROTECTED] [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