Fwd: [email protected] post from [email protected] requires approval

I received the following overnight.  However, when I logged into the 
Postorious site, there were no held messages for me to release.  Not 
only were there no messages to release, this message seems to have been 
discarded, since I never received a copy of it from the mailing list.

Any chance this is related to the recent discussion of spam filtering?

Forwarded message:

> From: [email protected]
> To: [email protected]
> Subject: [email protected] post from [email protected] 
> requires approval
> Date: Sat, 01 Feb 2025 11:10:25 +0000
>
> As list administrator, your authorization is requested for the
> following mailing list posting:
>
>     List:    [email protected]
>     From:    [email protected]
>     Subject: Edge case of TIMESTAMP<=
>
> The message is being held because:
>
>     The message is not from a list member
>
> At your convenience, visit your dashboard to approve or deny the
> request.