A Russian government agency tasked with implementing the block could run a 5xx
responder on port 25 if it had the IPs directed at it.
On 10 March 2022 21:15:43 UTC, Jay Hennigan via mailop <[email protected]>
wrote:
>On 3/10/22 12:22, Autumn Tyr-Salvia via mailop wrote:
>> Hello,
>>
>> Given world events at the moment, there are reports that Russia is going
>> to "disconnect from the internet" - but I don't know what exactly that
>> means in terms of our direct interactions online. If we are sending
>> emails to Russian mailbox providers - what types of bounces or errors
>> should we look for?
>
>You would see a timeout or possible connection refused if the receiving
>MTA is itself unreachable.
>
>If the MTA is reachable or there's a secondary that's reachable but the
>end user is cut off you won't see a bounce at all. The mail will just
>sit in the user's mailbox.
>
>I doubt if you'll see the typical 4xx or 5xx bounce from the receiving
>system.
>
>--
>Jay Hennigan - [email protected]
>Network Engineering - CCIE #7880
>503 897-8550 - WB6RDV
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--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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