On 9 Jun 2025, at 21:46, Bill Cole via Postfix-users 
<[email protected]> wrote:
> 
> Is a blacklistd entry for port587 supposed to block port 25?
> 
> I use blacklistd with ipfw, where the 'portxyz' tables are used in rules that 
> only block port xyz. I would expect that it does the same with pf.


Same behavior with PF, port587 entries will block only connections to port 587.
Those are registered when a sasl auth error is detected. 


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