Sounds like a DNS problem.... The PINE mail that worked was sent locally so I am assuming that a DNS failure wouldn't stop it as long as the machine knew its own name. The thing to check here is not your sendmail setup, but whether you have the correct dns server's assigned in your /etc/resolv.conf and that the servers defined here know about all the hosts involved... namely <grin>: 1. The host you are sending the email from 2. That they are able to resolv the MX entries for the domains you are trying to send to Let me know if any of this helped. -Ahsan ----- Original Message ----- From: "Saidi; Marwan" <msaidi@ced-concord.com> To: <linux-net@vger.rutgers.edu> Sent: Monday, July 03, 2000 10:44 PM Subject: Sendmail weirdness > 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 > - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu
