Try using a larger key, at least 2048 bits.

Check all your DNS entries and make sure everything matches correctly, MX, A, 
reverse, etc.

Check to see if your hostname used in the HELO/ELHO process matches what is in 
DNS.

Regards,
 
Eduard Tieseler
Network Operations Director
4050 Truxel Road Suite A
Sacramento, CA 95834
Office  916-922-7584 ext. 288
Fax 916-922-1835
etiese...@metrolist.net
 
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On 1/25/22, 8:51 AM, "bind-users on behalf of Benny Pedersen" 
<bind-users-boun...@lists.isc.org on behalf of m...@junc.eu> wrote:

    On 2022-01-25 17:45, Greg Choules wrote:
    > Hello.
    
    Authentication-Results: lists.isc.org;
        dkim=fail reason="signature verification failed" (1024-bit key; 
    unprotected) header.d=isc.org header.i=@isc.org header.b=q/vOEba5;
        dkim=fail reason="signature verification failed" (1024-bit key; 
    unprotected) header.d=isc.org header.i=@isc.org header.b=ozeUkO/Z
    
    dont know why it failed
    
    will my dkim fail aswell ?
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