Re: require verify = recipient

On 2026/01/23 7:35 AM, Evgeniy Berdnikov via Exim-users wrote:
>>        require verify 	    = recipient
>>        ...
>>
>> i suspect this is not configured to do as i expect.  i am hoping to
>> respond to the sender with a 5xx if the user is not known
> 
>   First, test it with "exim -bt" (maybe with -bh plus -d-all+acl+route).

To expand on that, "verify = recipient" just runs the routing chain to
discover if a routing decision can be made.  The knowledge that a recipient
really exists lives there; if the recipient is local then a router that
deals with local deliveries should be also checking local_part, and
for external destinations the extent of knowledge is (usually) that
a target MX can be found in DNS (the remote MX is not contacted at this
time, unless you do a "callout" verify).

A "-bt" test also runs the routing chain.
-- 
Cheers,
   Jeremy

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