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qmail doesn't use the hosts file. Without the flags to turn off the lookups
that we talked about earlier, it will do a DNS lookup. Look for the dns.c
file in your qmail source to see what it's doing. If you don't already, I'd
suggest running DJB's dnscache/tinydns programs and configure that to handle
returning names/numbers for your local machines.
-----Original Message-----
From: Chuck Tran [mailto:[EMAIL PROTECTED]
Sent: Friday, March 08, 2002 2:45 PM
To: [EMAIL PROTECTED]
Subject: RE: [brluglist] Smtp connection
Thanks for the suggestion. They are all internal PCs and they were
already in /etc/hosts file.
Any other ideas?
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Tim Fournet
Sent: Friday, March 08, 2002 2:06 PM
To: [EMAIL PROTECTED]
Subject: Re: [brluglist] Smtp connection
Sounds like you're having a problem with reverse DNS. Make sure the
computer can do reverse lookups on IP addresses, and make any necessary
corrections to the nameserver entries in /etc/resolv.conf. If they're
all internal PC trying to connect, and they don't have real internet
hostnames, you may consider adding them to /etc/hosts.
-Tim
Chuck Tran wrote:
>I need some assistance with an SMTP connection problem I am
>experiencing.
>
>My SMTP server is having difficulty accepting connections on one of my
>eth interfaces. I am using qmail.
>
> lo - 127.0.0.1
> eth0 - 192.168.0.1 (to LAN)
> eth1 - x.x.x.x (to internet)
>
>>From the SMTP server itself, when I telnet to lo or eth1 to port 25, I
>immediately get a reply from qmail. But when I telnet to eth0 on port
25
>it takes just about two minutes before I get a response.
>
>Also, from a workstation (192.168.0.2) within my LAN I get the same
slow
>response when I telnet to port 25 on both interfaces on my SMTP server.
>
>Any assistance would be greatly appreciated.
>
>
>
>Chuck
>
>
>================================================
>BRLUG - The Baton Rouge Linux User Group
>Visit http://www.brlug.net for more information.
>Send email to [EMAIL PROTECTED] to change
>your subscription information.
>================================================
>
================================================
BRLUG - The Baton Rouge Linux User Group
Visit http://www.brlug.net for more information.
Send email to [EMAIL PROTECTED] to change
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================================================
================================================
BRLUG - The Baton Rouge Linux User Group
Visit http://www.brlug.net for more information.
Send email to [EMAIL PROTECTED] to change
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<TITLE>RE: [brluglist] Smtp connection</TITLE>
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<BODY>
<P><FONT SIZE=3D2>qmail doesn't use the hosts file. Without the =
flags to turn off the lookups that we talked about earlier, it will do =
a DNS lookup. Look for the dns.c file in your qmail source to see what =
it's doing. If you don't already, I'd suggest running DJB's =
dnscache/tinydns programs and configure that to handle returning =
names/numbers for your local machines.</FONT></P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Chuck Tran [<A =
HREF=3D"mailto:[EMAIL PROTECTED]">mailto:[EMAIL PROTECTED]</A>]<=
/FONT>
<BR><FONT SIZE=3D2>Sent: Friday, March 08, 2002 2:45 PM</FONT>
<BR><FONT SIZE=3D2>To: [EMAIL PROTECTED]</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [brluglist] Smtp connection</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Thanks for the suggestion. They are all internal PCs =
and they were</FONT>
<BR><FONT SIZE=3D2>already in /etc/hosts file.</FONT>
<BR><FONT SIZE=3D2>Any other ideas?</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Chuck</FONT>
</P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: [EMAIL PROTECTED] [<A =
HREF=3D"mailto:[EMAIL PROTECTED]">mailto:[EMAIL PROTECTED]
et</A>] On</FONT>
<BR><FONT SIZE=3D2>Behalf Of Tim Fournet</FONT>
<BR><FONT SIZE=3D2>Sent: Friday, March 08, 2002 2:06 PM</FONT>
<BR><FONT SIZE=3D2>To: [EMAIL PROTECTED]</FONT>
<BR><FONT SIZE=3D2>Subject: Re: [brluglist] Smtp connection</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Sounds like you're having a problem with reverse DNS. =
Make sure the </FONT>
<BR><FONT SIZE=3D2>computer can do reverse lookups on IP addresses, and =
make any necessary </FONT>
<BR><FONT SIZE=3D2>corrections to the nameserver entries in =
/etc/resolv.conf. If they're </FONT>
<BR><FONT SIZE=3D2>all internal PC trying to connect, and they don't =
have real internet </FONT>
<BR><FONT SIZE=3D2>hostnames, you may consider adding them to =
/etc/hosts.</FONT>
</P>
<P><FONT SIZE=3D2>-Tim</FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=3D2>Chuck Tran wrote:</FONT>
</P>
<P><FONT SIZE=3D2>>I need some assistance with an SMTP connection =
problem I am</FONT>
<BR><FONT SIZE=3D2>>experiencing.</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>>My SMTP server is having difficulty accepting =
connections on one of my</FONT>
<BR><FONT SIZE=3D2>>eth interfaces. I am using qmail.</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>> lo - =
127.0.0.1</FONT>
<BR><FONT SIZE=3D2>> eth0 - =
192.168.0.1 (to LAN)</FONT>
<BR><FONT SIZE=3D2>> eth1 - =
x.x.x.x (to internet)</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>>>From the SMTP server itself, when I telnet =
to lo or eth1 to port 25, I</FONT>
<BR><FONT SIZE=3D2>>immediately get a reply from qmail. But when I =
telnet to eth0 on port</FONT>
<BR><FONT SIZE=3D2>25</FONT>
<BR><FONT SIZE=3D2>>it takes just about two minutes before I get a =
response.</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>>Also, from a workstation (192.168.0.2) within my =
LAN I get the same</FONT>
<BR><FONT SIZE=3D2>slow</FONT>
<BR><FONT SIZE=3D2>>response when I telnet to port 25 on both =
interfaces on my SMTP server.</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>>Any assistance would be greatly =
appreciated.</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>>Chuck</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>></FONT>
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SIZE=3D2>>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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<BR><FONT SIZE=3D2>>BRLUG - The Baton Rouge Linux User Group</FONT>
<BR><FONT SIZE=3D2>>Visit <A HREF=3D"http://www.brlug.net"; =
TARGET=3D"_blank">http://www.brlug.net</A> for more information.</FONT>
<BR><FONT SIZE=3D2>>Send email to [EMAIL PROTECTED] to =
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<BR><FONT SIZE=3D2>BRLUG - The Baton Rouge Linux User Group</FONT>
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