??: [Exim] host_lookup

> You have some setting in your configuration that requires Exim to find a
> host name for comparison. Run
>
> exim -bh 217.106.231.250
>
> to see what is going on.

# exim -bh 217.106.231.250

**** SMTP testing session as if from host 217.106.231.250
**** Not for real!

>>> host in host_lookup? no (option unset)
>>> looking up host name for 217.106.231.250
>>> IP address lookup failed
>>> host in host_reject? yes (failed to find host name or lookup deferred)
LOG: connection from [217.106.231.250] refused (failed to find host name
from IP
address)
554-contact postmaster@??? for details
554 SMTP service not available (failed to find host name from IP address)

Oops! host_reject is reason! I see now, I should remove my host_reject list
if I want to receive mail from junk hosts.

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Sem.