Pieter.Donche at ua.ac.be
Tue Jan 13 23:52:01 PST 2009
$ host -t MX macos.cmi.ua.ac.be
returns no answer
This is the same as with another host on the same subnet, also in the
same zone and on the same switch... and which does receive a sent mail
But, when I try from host1
$ telnet host2.domain.topdom 25
telnet: Unable to connect to remote host: Connection refused
Op host2.domain.topdom I see sendmail is running:
host2: $ ps -jaxw | grep sendm
smmsp 816 1 816 816 0 Is ?? 0:00.02 sendmail: Queue
runner at 00:30:00 for /var/spool/clientmqueue (sendmail)
root 812 1 812 812 0 Ss ?? 0:00.01 sendmail: accepting
What's wrong? Why does this not work out of the box ??
On Tue, 13 Jan 2009, Mel wrote:
> On Tuesday 13 January 2009 13:20:33 Pieter Donche wrote:
>> 'Returned mail: see transcript for details":
>> ----- The following addresses had permanent fatal errors -----
>> <user at host2.domain.topdom>
>> ----- Transcript of session follows -----
>> 550 5.1.2 <user at host2.domain.topdom>... Host unknown (Name server:
>> mailhost.domain.topdom: host not found)
>> host1 and host2 are both behind a firewall, but they are in the same
>> zone (so firewall rules do not apply), both are even connected to same
>> switch and their IPs are in the same subnet.
>> Both have fixed IP address (not DHCP)
>> mailhost.domain.topdom does not exist in DNS, but host1 can send
>> mail to other mailservers all over the world.
> MX record for host2.domain.topdom resolves to an unknown
> See: host -t MX host2.domain.topdom on host1.domain.topdom.
> Problem with today's modular software: they start with the modules
> and never get to the software part.
More information about the freebsd-questions