[afnog] sendmail problem

[Alex Gondwe]

I am currently updating my .in-addr.arpa and all the zone files.


Joe Abley wrote:
>
> On 7-Nov-2006, at 09:17, Stephane Bortzmeyer wrote:
>
>> Check that the DNS resolver of the MTA can always resolve local IP
>> addresses, even without access to the Internet. For instance, if your
>> local addresses are 192.0.2.0/24, check that 2.0.192.in-addr.arpa is
>> directly reachable from this resolver (either because it is
>> authoritative for it or because it knows a forwarder which is).
>
I will simulate the problem and try the solution above. Thanks for your 
response. I will give you feedback.

> If this doesn't fix the problem, then it's possible that sendmail is 
> doing sender address verification as it accepts mail from the network 
> (e.g. checking that the recipient domains exist in the DNS).
>
> I seem to remember that there's a sendmail option which causes it to 
> accept and queue mail and defer those kinds of checks until the queue 
> run. But it's so long since I have dared run sendmail on any machine 
> in my control, I can't tell you for sure.
>
>
> Joe
>
>