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<TITLE>Re: Sendmail & MailScanner - can't connect from public addresses</TITLE>
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<P><FONT SIZE=2>Sounds like it is trying to reverse lookup on the inbound connx before allowing it to open the socket. Don't remember how to turn this off offhand. Grep for lookup and see wjere that gets you. </FONT></P>
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<P><FONT SIZE=2>--------------------------</FONT>
<BR><FONT SIZE=2>Sent from my BlackBerry Wireless Handheld</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: James D. Parra <Jamesp@MUSICREPORTS.COM></FONT>
<BR><FONT SIZE=2>To: MAILSCANNER@JISCMAIL.AC.UK <MAILSCANNER@JISCMAIL.AC.UK></FONT>
<BR><FONT SIZE=2>Sent: Fri Mar 12 19:02:21 2004</FONT>
<BR><FONT SIZE=2>Subject: Sendmail & MailScanner - can't connect from public addresses</FONT>
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<P><FONT SIZE=2>Hello,</FONT>
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<P><FONT SIZE=2>Finished setting up the latest MailScanner and Sendmail, however, although I</FONT>
<BR><FONT SIZE=2>can connect to the mail server via telnet to port 25 from any machine on the</FONT>
<BR><FONT SIZE=2>local subnet, it does not respond from any request from public IP addresses.</FONT>
<BR><FONT SIZE=2>There is no firewall on this server, but it is behind a firewall. Nmap shows</FONT>
<BR><FONT SIZE=2>port 25 as open. When I open port forwarding from two other firewalls (from</FONT>
<BR><FONT SIZE=2>different ISP address ranges) to the mail server, I get no response when</FONT>
<BR><FONT SIZE=2>telnetting from the public side to the smtp port. (It is not the firewall</FONT>
<BR><FONT SIZE=2>since port forwarding works to the other mail servers)</FONT>
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<P><FONT SIZE=2>It appears that either Sendmail or MailScanner is only accepting connections</FONT>
<BR><FONT SIZE=2>from the local subnet.</FONT>
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<P><FONT SIZE=2>Any ideas on how to fix this?</FONT>
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<P><FONT SIZE=2>This may be useful;</FONT>
<BR><FONT SIZE=2>grep "inet" /etc/mail/sendmail.cf</FONT>
<BR><FONT SIZE=2>#O ClientPortOptions=Family=inet, Address=0.0.0.0</FONT>
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<P><FONT SIZE=2>Many thanks in advance,</FONT>
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<P><FONT SIZE=2>James</FONT>
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