Re: Long connect times
On Thu, Jun 14, 2001 at 05:39:06PM +1000, Jon Booth wrote: Hi all, I am using QMail with xinetd. It takes ages for a PC internally (allowed to relay) to connect to the server. Outside servers can connect instantly. Where should I look to diagnose this problem I'm not familiar with xinetd but it might be configured to do reversed DNS lookups for incoming connections. It will most probably delay the connection if it can't do that properly. By the way, tcpserver[1] is the prefered internet daemon for qmail. Jörgen [1] http://cr.yp.to/ucspi-tcp.html
Re: Long connect times
That would make sense. How can I stop it from doing reverse lookups? Its not practical from me to set up reverse DNS for these internal IPs. Thanks Jon On Thu, 14 Jun 2001, [iso-8859-1] Jörgen Persson wrote: On Thu, Jun 14, 2001 at 05:39:06PM +1000, Jon Booth wrote: Hi all, I am using QMail with xinetd. It takes ages for a PC internally (allowed to relay) to connect to the server. Outside servers can connect instantly. Where should I look to diagnose this problem I'm not familiar with xinetd but it might be configured to do reversed DNS lookups for incoming connections. It will most probably delay the connection if it can't do that properly. By the way, tcpserver[1] is the prefered internet daemon for qmail. Jörgen [1] http://cr.yp.to/ucspi-tcp.html
Re: Long connect times
On Thu, Jun 14, 2001 at 06:15:17PM +1000, Jon Booth wrote: That would make sense. How can I stop it from doing reverse lookups? Its not practical from me to set up reverse DNS for these internal IPs. I've got no clue how to do that with xinetd but it's use with qmail is mentioned in their FAQ[1]. Jörgen [1] http://www.xinetd.org/faq.html Thanks Jon On Thu, 14 Jun 2001, [iso-8859-1] Jörgen Persson wrote: On Thu, Jun 14, 2001 at 05:39:06PM +1000, Jon Booth wrote: Hi all, I am using QMail with xinetd. It takes ages for a PC internally (allowed to relay) to connect to the server. Outside servers can connect instantly. Where should I look to diagnose this problem I'm not familiar with xinetd but it might be configured to do reversed DNS lookups for incoming connections. It will most probably delay the connection if it can't do that properly. By the way, tcpserver[1] is the prefered internet daemon for qmail. Jörgen [1] http://cr.yp.to/ucspi-tcp.html
RE: Long connect times
Try a stub resolver on the mailbox. In addition to your regular name server/cache you should get decent response times. The stub resolver needn't take much ram or cpu. If you didn't have a stub resolver already, you will notice a nice performance boost. Otherwise try playing with the cache. There are some nice tools to figure out what your resolver is doing on the djbdns site. Oh.. get djbdns too. Works here just fine. -Mike -Original Message- From: Russell Nelson [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 14, 2001 10:00 AM To: Jon Booth Cc: [EMAIL PROTECTED] Subject: Re: Long connect times Jon Booth writes: Hi all, I am using QMail with xinetd. It takes ages for a PC internally (allowed to relay) to connect to the server. Outside servers can connect instantly. Where should I look to diagnose this problem Reverse DNS for your internal hosts. It's not optional. -- -russ nelson [EMAIL PROTECTED] http://russnelson.com Crynwr sells support for free software | PGPok | 521 Pleasant Valley Rd. | +1 315 268 1925 voice | #exclude windows.h Potsdam, NY 13676-3213 | +1 315 268 9201 FAX |
Re: Long connect times
OK I have set up reverse DNS and it works great. The reason I was hesitant to set it up was I was using my ISPs DNS to resolve not my local but I am now forwarding from my local to theirs Thanks Jon Booth On Thu, 14 Jun 2001, Russell Nelson wrote: Jon Booth writes: Hi all, I am using QMail with xinetd. It takes ages for a PC internally (allowed to relay) to connect to the server. Outside servers can connect instantly. Where should I look to diagnose this problem Reverse DNS for your internal hosts. It's not optional. -- -russ nelson [EMAIL PROTECTED] http://russnelson.com Crynwr sells support for free software | PGPok | 521 Pleasant Valley Rd. | +1 315 268 1925 voice | #exclude windows.h Potsdam, NY 13676-3213 | +1 315 268 9201 FAX |
