[cobalt-users] Mail not sent ... User unknown error

["Scott Elliott" <selliott@xxxxxxxxxxxxxxxxxx>]

I have a RaQ3 that is colocated at our Web hosting partner (external to our company). There are 5 Web sites on it, each with its own domain name. The RaQ3 accepts mail for 3 of the domains, and the mail for the other two domains (caeultrasonics.com and caegreasemonkey.com) is suppposed to be forwarded to our internal mail server. I do not handle the DNS...my hosting partner does. 

When sending mail from the RaQ3 (using pine, sendmail--see below, or the PHP mail function) to caeultrasonics.com or caegreasemonkey.com I get a "User unknown" error. I have checked every place I can imagine to see if I have a configuration setting screwed up, but it all looks right to me. (The crazy thing is, it was working two days ago. And I can't think of anything I did that would affect this. If no one has suggestions based on the following, I'll try to remember everything I did!)

Cobalt GUI stuff...
****************
SITE MANAGEMENT (for both of the trouble domains)
- Each has own IP, both have host name of "www"
- Accept Email for Domain is unchecked
- Web Access by Domain is unchecked
USER MANAGEMENT
- caeultrasonics.com has one user defined, no email aliases
- caegreasemonkey.com has no users defined
SERVER MGMT --> CONTROL PANEL --> EMAIL SVR PARAMETERS
- Relay for domains list has only the three domains that the RaQ accepts mail for (although I did put in caeultrasonics.com and caegreasemonkey.com AND their respective IP addresses with no luck)
- Host/Domain Aliases lists only the domains that it accepts mail for.

Command line stuff...
****************
nslookups from authoritative server
****************
caeultrasonics.com
        origin = www.interlattice.com
        mail addr = root.www.interlattice.com
        serial = 2000081012
        refresh = 10800 (3H)
        retry   = 3600 (1H)
        expire  = 604800 (1W)
        minimum ttl = 86400 (1D)
caeultrasonics.com      nameserver = www.interlattice.com
caeultrasonics.com      preference = 30, mail exchanger = mail.caeultrasonics.com
caeultrasonics.com      internet address = 63.170.169.130
caeultrasonics.com      nameserver = www.interlattice.com
mail.caeultrasonics.com internet address = 208.3.190.129
****************
caegreasemonkey.com
        origin = www.interlattice.com
        mail addr = root.www.interlattice.com
        serial = 2000081012
        refresh = 10800 (3H)
        retry   = 3600 (1H)
        expire  = 604800 (1W)
        minimum ttl = 86400 (1D)
caegreasemonkey.com     nameserver = www.interlattice.com
caegreasemonkey.com     internet address = 63.170.169.129
caegreasemonkey.com     preference = 30, mail exchanger = mail.caeultrasonics.com
caegreasemonkey.com     nameserver = www.interlattice.com
mail.caeultrasonics.com internet address = 208.3.190.129
****************
sendmail troubleshooting (note: elliottnet.com is one of the local domains)
****************
# /usr/sbin/sendmail -bv selliott@xxxxxxxxxxxxxxxxxx
selliott@xxxxxxxxxxxxxxxxxxxxx User unknown
# /usr/sbin/sendmail -bv selliott@xxxxxxxxxxxxxxxxxxx
selliott@xxxxxxxxxxxxxxxxxxxxxx User unknown
#/usr/sbin/sendmail -bv scott@xxxxxxxxxxxxxx
scott@xxxxxxxxxxxxxxxxx deliverable: mailer local, user scott
#/usr/sbin/sendmail -bv scott@xxxxxxxxxxxxxxxxxx
scott@xxxxxxxxxxxxxxxxxxxxx deliverable: mailer local, user scott
# /usr/sbin/sendmail -bv scott@xxxxxxxxxxxxxxxxxxx
scott@xxxxxxxxxxxxxxxxxxxxxx deliverable: mailer local, user scott

That's where I'm at. Let me know if there's anything else that would help pinpoint the problem.

My guess (FWIW) is that something is telling sendmail to deliver caeultrasonics.com and caegreasemonkey.com locally, in spite of the MX records and configuration files that tell it otherwise. I honestly have no idea what that something is, though! (I'm a recent Linux convert...)

Scott Elliott
IT Manager
selliott@xxxxxxxxxxxxxxxxxx

(Disclaimer: CAE Ultrasonics takes no responsibility for my posts. If I offend you, you can't blame them!)