That seems to be an MTA originated error.
Check your MTA logs.
On Sun, 15 Nov 2020 at 23:03, Thomas Anderson via Fail2ban-users <
[email protected]> wrote:
> jERROR NOK: ("No 'host' group in 'Recipient address rejected: User
> unknown in virtual mailbox table'",)
>
>
> What exactly does that mean?
>
>
>
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> Fail2ban-users mailing list
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> https://lists.sourceforge.net/lists/listinfo/fail2ban-users
>
--
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft.", grep ^[^#] :-)
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