On 19/01/2023 17:32, The Doctor via Exim-users wrote:
>> I assumed that you were blocking the pair
>> (src ip 46.148.40.108, target port 25)
>> and was checking that you are also blocking
>> (src ip 46.148.40.108, target port 465)
>>
> Could this cause a 601 error?
Possibly a typo? SMTP does not define any 6xx error code.
Also, irrelevant. Blocking done by a firewall would be
stopping TCP-level connection, so you won't get any SMTP
communication at all. How a client reports that is up to it.
--
Cheers,
Jeremy
