>>
>> I'd like it to work on the first attempt, cannot disturb my companies
>> mail for an hour to try different settings.. Any help is greatly
>> appreciated.
>>
>
>
>You can try running a second exim (test instance) on port 26.
>
>Or, test the new config using something like 'exim -bhc ...`. In
>either case you'll want to test your new config under a different
>filename (using -C filename) , so that the production instance isn't
>affected.
>
Thank you for your answer. It helped, but I still have a problem:
How can I simulate an external mail from a whitelisted domain this way (eg yahoo.com)? This will always arrive at the production instance of exim.