I have a situation which may be off-topic, and if so, I apologize. We have been beating heads on walls for some time now with this one.... We have a Windows NT network, on which we have a RedHat 6.2 box named woodstock in the domain ced-concord.com to host our intranet. Everything seemed to be working fine, until a simple form mailer stopped working. The form still works and generates the mail, but the mail gets deferred. I am getting a message "host name lookup failure" on each piece of mail generated by the form. Additionally, if I try to use the KDE mail client, I get the same problem. (Mail is queued, but never delivered). It gets interesting here.... If I use PINE and specify mail.ced-concord.com as the smtp server, mail goes through with no problem, yet I still get the host name lookup failure message. My question is this: can anyone point me in the correct direction? I have looked extensively at all of the setups for networking and sendmail, and I am at the end of my limited knowledge. I have included a couple of entries from maillog to illustrate. Any and all help would be greatly appreciated. Here is an entry that is deferred in the queue: Jul 3 10:23:10 woodstock sendmail[5617]: JAA05581: to=landman@ced-concord.com, ctladdr=nobody (99/99), delay=01:07:55, xdelay=00:00:00, mailer=esmtp, relay=ced -concord.com., stat=Deferred: Name server: ced-concord.com.: host name lookup fa ilure Followed by the entry that works in PINE: Jul 3 12:43:21 woodstock sendmail[5819]: MAA05819: from=<root@ced-concord.com>, size=297, class=0, pri=30297, nrcpts=1, msgid=<Pine.LNX.4.21.0007031242540.5816 -100000@woodstock.ced-concord.com>, proto=ESMTP, relay=IDENT:root@woodstock.ced- concord.com [192.168.0.77] Jul 3 12:43:21 woodstock sendmail[5821]: MAA05819: to=<msaidi@ced-concord.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, relay=ced-concord.com., stat=Def erred: Name server: ced-concord.com.: host name lookup failure TIA Marwan Saidi Desktop Analyst CED - Concord Information Services - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu
