I'm trying to setup a mail server for my domain.org which I manage via dyndns' dynamic IP address.
I have setup the MX record in dyndns as
smtp.domain.org 10 domain.org and I created an alias smtp.domain.org
alias to domain.org.
Now, I come to my server /etc/postfix/main.cf and type
mydomain = smtp.domain.org and restart postfix.
If I do -
host -t mx domain.org - domain.org has no MX record
nslookup smtp.domain.org - Can't find smtp.domain.org.
But if I do -
host -t mx smtp.domain.org
I get reply smtp.domain.org mail is handled by 10 domain.org.
Can anyone tell me why my nslookup query is not resolving and how can I send mail as
user@domain.org and not as
user@smtp.domain.org?
Thanks.
ps: I can connect to domain.org on port 25.