I recently upgraded one of our mail servers from RedHat 4.2 to RedHat 6.0 -- so in addition from new versions of sendmail, bind, etc -- I also picked up the glibc and 2.2.5 kernel. Unfortunately, although we did the upgrade to help performance, we encountered some problems. Currently, this only seems to be apparent in the sendmail portion of the system in that once we have over 120 connections, that it will consistently lock up. Now, I know I can set the MaxDaemonChildren to 100 -- but we're an ISP and need to be able to better utilize the resources of this server to make sure more e-mail is handled. I've been sending e-mail back and forth with the developers at sendmail when they forwarded me a snippit from the README for the 8.10 that lists a known problem with Linux 2.2.0 where it would lock up due to what appeared to be a bug either in the TCP/IP stack or in the implementation of poll() as it interacts with syslog() and the resolver libraries specifically. I tried upgrading my kernel to 2.2.12, this time compiling it the old fashioned way rather than relying on an rpm or even source rpm, and the problem has persisted. Has anyone else experienced this problem? If so, am I going in the right direction -- or better, anyone found a solution? ;-) Thanks in Advance. -- Robert G. Fisher NEOCOM Microspecialists Inc. System Administrator/Programmer (540) 666-9533 x 116 - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to [EMAIL PROTECTED]
