[SOLVED] Mail failing for servers with no A record

[timwiel]

ZCS: zcs-5.0.2_GA_1975.UBUNTU6.20080130235804
os: ubuntu 6.06LTS

I am having problems with postfix not sending emails from the zimbra server to any server with no A record.

Examples of such servers can be accessed via:

dig stonebow.otago.ac.nz
dig stonebow.otago.ac.nz MX
dig otagodhb.govt.nz 
dig otagodhb.govt.nz MX

An example of a server that works sending email is:

dig hotmail.com
dig hotmail.com MX

I have DNS lookups in the server tab unchecked

Any ideas

[bdial]

turning off dns lookup is whats causing your problem. turn it back on.

[timwiel]

that did fix it - I turned it off a few days ago because the mta couldn't connect to itself to deliver the messages to the inbox - doesn't seem to be a problem now - not sure how I fixed that but at least the mail is sending out

[Bill Brock]

DNS checking blocks a lot of spam. I have simply chosen to leave it on and contact the admins of improperly configured servers (or DNS thereof).

If someone puts a mail server up they should take the responsibility to learn to do it right.