Red Hat Bugzilla – Bug 55935
Sendmail identd timeout causes hangs when connecting to send mail
Last modified: 2007-04-18 12:38:09 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Description of problem:
The sendmail.cf config defaults to a 5 second timeout on identd lookups.
What this means is that anyone connecting to a Redhat mail server and not
running identd (most Windows clients) will experience a 5 second delay
while the Redhat box times out on the identd time.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Telnet to port 25 on Redhat server running sendmail from a client
without an identd server (Windows)
Actual Results: Five second hang will be experienced before getting
I would recommend changing the default identd timeout in sendmail.cf to 0s
or something lower than 5 seconds. This can be changed directly in the
sendmail.mc used to build the cf file...
should be something like
Why are no rejects done from Windows? Looks like a bad firewall configuration
that could be the cause for this?
I agree that identd is not very useful, but will probably leave the default
settings for now.
Florian La Roche