Hello,
I'm having some very strange problems with Sendmail. We have a BSD box that runs our network monitoring software. The software is configured to send text messages to our cell phones when there is a problem. A guy that managed this server recently left the company and I think he made some changes before he left that broke Sendmail. We used to get messages on our phones but we dont anymore. When I checked the maillog I see the following errors:
Jan 19 11:24:54 mail sm-mta[520]: k0JGOrqQ000518: to=<1112223333@mobile.myci
ngular.com
>, ctladdr=<bnuss@mail.ourdom
ain.com> (1008/1008), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=30385, relay=mx.mycingular.net. [66.102.172.222], dsn=5.6.0, stat=Data format error
Obviously 1112223333 is not a valid phone number. I just put that in there. Same with ourdomain.com. To rule out problems with the monitoring application I tried sending a message to my phone using the mail command. It fails with the same error.
I researched the stat=Data format error trying to find out what it meant. From what I found people relate this error to a DNS problem that can be fixed by adding an entry to the /etc/hosts file. Our host file is correct and hasnt been edited in a long time. I checked the dates on the files in the /etc/mail directory and also for our monitoring program but I cant find anything that was edited recently. The monitoring program is Nagios
We were able to send messages to our phones before but now it doesnt work. Im stuck from a troubleshooting perspective and want to get some advice from the Experts on this site. Anyone have any ideas what might be causing this error or give me some troubleshooting steps?
Thanks for the help!
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