nullmailer - Sending failed: Could not exec program

[Graham Watkins]

On 21/06/14 16:47, Gene Heskett wrote:
> On Saturday 21 June 2014 11:33:01 Graham Watkins did opine
> And Gene did reply:

>
> That is an outside address. Does your dns resolver know who ntlworld.com
> is?
>
Haven't the foggiest. How would I check?

> If your local network is host file based, then it even works between
> machines. I can send an email from lathe.coyote.den to coyote.coyote.den
> with gene at coyote.coyote.den as the address.  That assumes the resolver is
> set for host,dns for search order.

Again, what would I need to be looking at? Nothing like this was 
mentioned in the nullmail info I have been reading on the net - which 
was a lot vaguer than I would have liked.
>
>> that hasn't arrived either.
>
> And you must delete it from the queue before sending another test msg
> after changing whatever you need to change. A stuck msg hangs the whole
> queue.

OK done that.
>
>> sudo nullmailer-send
>> Rescanning queue.
>> Starting delivery, 1 message(s) in queue.
>> Starting delivery: protocol: --port=25 host: smtp.ntlworld.com file:
>> 1403364453.2933
>> Sending failed: Could not exec program
>> Delivery complete, 1 message(s) remain.
>>
>> Will provide any more info required though I'm a bit outside my comfort
>> zone here.
>>
>> Cheers,
>>
>> Graham
>
> Generally if the mail originates on this machine, you only need the
> username to send yourself an email on that machine.  You may have to make
> a group entry that merges that name with yours if the originating user is
> not you.
>
> Cheers, Gene Heskett

Which username - my machine user name (graham-desktop) or my mail id 
shellycat.gw ?

This seems like deep stuff for a humble desktop user.

As to a point you raise in your other mail,  I don't have sendmail 
installed (though maybe installing nullmail removed it).

I'm still inclined to think that the fault lies in the configuration of 
my /etc/nullmailer/remotes file.  I think I'm overlooking something 
obvious but it probably needs someone with first-hand experience of 
nullmail to tell me if that's the case. Anyway, thanks for taking an 
interest.

Cheers,

Graham