Jethro R Binks wrote:
> On Wed, 22 Oct 2008, Alain Williams wrote:
>
>> It is not clear to me which machine is saying: ''Empty sender address is
>> not allowed'' - I think mr51-iz.mailpoalim.co.il
>>
>> I think that what is happening is that exim is connecting to mr51-iz.mailpoalim.co.il to see if it will accept mail to miki.nachmani@???
>> and as part of it sends:
>> MAIL FROM:<> which mr51-iz.mailpoalim.co.il objects to. Which
>> suggests that that machine will not accept bounces.
>
> Yes.
[...]
> By all means verify the domain is valid and likely deliverable, but don't
> use callouts to third party domains: restrict them to your own
> administrative scope.
Not everyone agrees with that position.
- Jeremy
