email server – DKIM failure on postfix

i’m configuring dkim to sign miltiple domains with the same key on postfix , I followed this tutorial https://shankerbalan.net/blog/signing-multiple-domains-with-the-same-opendkim-key/
with s=mail , d=senderServer.com
this is the SigningTable :* mail._domainkey.senderServer.com
this is the KeyTable:
mail._domainkey.senderServer.com %:mail:/etc/opendkim/keys/default.private

My TXT DNS record is on the main domain (Server domain name) Here: senderServer.com , It works great when I send an email from senderServer.com using my FROM address as: anything@senderServer.com

The problem is with other domains using my postfix server , when I send an email using my FROM address as: anything@otherDomain.com ( i configured DKIM , DMARC and SPF on otherDomain’s DNS zone)
The DKIM signature is added but using otherDomain as the domain value tag . and the DKIM signature failed only on outlook.fr dkim=fail(signature did not verify)
But it pass on gmail(DKIM:PASS ) and on mail-tester.com i get 10/10