Re: Fwd: dovecot mailing list probe message

> On 30/03/2026 12:12 EEST Jaco Kroon via dovecot <[email protected]> wrote:
> 
>  
> Hi,
> 
> It seems like the list system is breaking DKIM - triggering bounces, 
> resulting in unsuscribes.
> 
> Is there recommendations on how to deal with this?
> 
> Looks like it relates 100% to the addition of the footer:
> 
> ______________________________________________
> dovecot mailing list -- [email protected]
> To unsubscribe send an email to [email protected]
> 
> 
> Kind regards,
> Jaco
> 
> 
> 
> -------- Forwarded Message --------
> Subject: 	dovecot mailing list probe message
> Date: 	Mon, 30 Mar 2026 06:32:58 +0000
> From: 	dovecot-bounces+a190cb9ae5d94d8fa6e2af68fc964a7aaa13256b@dovecot.org
> To: 	[email protected]
> 
> 
> 
> This is a probe message. You can ignore this message.
> 
> The [email protected] mailing list has received a number of bounces
> from you, indicating that there may be a problem delivering messages
> to [email protected]. A sample is attached below. Please examine this
> message to make sure there are no problems with your email address.
> You may want to check with your mail administrator for more help.
> 
> You don't need to do anything to remain an enabled member of the
> mailing list.
> 
> If you have any questions or problems, you can contact the mailing
> list owner at
> 
> [email protected]
>    Hi,
> 
>    It seems like the list system is breaking DKIM - triggering bounces,
>    resulting in unsuscribes.
> 
>    Is there recommendations on how to deal with this?
> 
>    Looks like it relates 100% to the addition of the footer:
> 
>    ______________________________________________
>    dovecot mailing list -- [1][email protected]
>    To unsubscribe send an email to [2][email protected]
> 
>    Kind regards,
>    Jaco
> 
>    -------- Forwarded Message --------
> 
> Subject: dovecot mailing list probe message
>    Date: Mon, 30 Mar 2026 06:32:58 +0000
>    From: [3]dovecot-bounces+a190cb9ae5d94d8fa6e2af68fc964a7aaa13256b@dovecot.org
>      To: [4][email protected]
> 
>    This is a probe message. You can ignore this message.
> 
>    The [5][email protected] mailing list has received a number of bounces
>    from you, indicating that there may be a problem delivering messages
>    to [6][email protected]. A sample is attached below. Please examine this
>    message to make sure there are no problems with your email address.
>    You may want to check with your mail administrator for more help.
> 
>    You don't need to do anything to remain an enabled member of the
>    mailing list.
> 
>    If you have any questions or problems, you can contact the mailing
>    list owner at
> 

It's using ARC-Signing, but ofc no one supports that. DMARC/DKIM and mailing lists are super fun.

Aki

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