Firstly, I apologize if I am submitting a question to the wrong mailing list. Secondly, I am impressed with OTRS. I have 'okay' linux skills, and despite a 'fingers-crossed' install, things are working pretty well. I have at least been able to pull emails off of my exchange server (m2.agia.com) via POP3, and from there I am able to assign ownership, make notes, and everything else internal is running great. My problem is this: When sending an email outside my otrs server, via POP3(?) to my exchange server, I receive the following message: |------------------------- Message log follows: -------------------------| no valid recipients were found for this message Xfail: reason: (ERR164) router inet_hosts: DNS error: The MX (m1.agia.com) target hostname 'm1.agia.com' has an unauthorised address of [172.25.0.10]: RFC-1918 addresses are never valid for MX targets on the public Internet! ------------------------------------------------------------------------- The address of my correct mail exchange server is 172.25.0.11 (m2.agia.com). An associate of mine said I need to run nslookup, commands Nslookup Set type=mx Agia.com I did, and the results are below: # nslookup Note: nslookup is deprecated and may be removed from future releases. Consider using the `dig' or `host' programs instead. Run nslookup with the `-sil[ent]' option to prevent this message from appearing.

set type=mx agia.com Server: 172.25.0.203 Address: 172.25.0.203#53

agia.com mail exchanger = 15 m1.agia.com. agia.com mail exchanger = 10 m2.agia.com. After running these commands, I did not see any change in the returned sent mail error messages. So, apparently, the first entry is the one that's giving me problems, but I don't know how to tell otrs that it's invalid, or remove it from my local machine somewhere. I'm not too sufficient at linux networking, and I may have bungled my /etc/hosts file which has an entry for my mail server which I may not need. In addition, I may have left off a trailing period (.) on one of my entries *(read that in a forum somewhere). Here is my hosts file: 127.0.0.1 helpdesk localhost 172.25.1.76 helpdesk.agia.com helpdesk 172.25.0.11 m2.agia.com m2 # The following lines are desirable for IPv6 capable hosts # (added automatically by netbase upgrade) ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts hosts (END) Also, I edited my resolv.conf file which again, I may have messed up: domain agia.com nameserver 172.25.0.203 nameserver 172.25.0.101 nameserver 172.25.0.11 resolv.conf (END) M2 (172.25.0.11), which is the mail server I need to work with, is also a name server; we have 2 others, so perhaps I don't need M2 in there. Before I went ahead and removed any entries, and mess up my mostly-functioning otrs installation, I wanted to consult the mailing list. Please be succinct in any replies. I do not know dig, nslookup, or DNS for that matter very well at all. Thanks in advance for your help, Regards, Jason Coltrin PC Systems and Support IV AGIA Inc.