Dkim - no signing domain match

Hello,

I am very pleased to have spun up my first freepbx server with the help of crosstalk solutions youtube and this forum. I am using office365 for email and the guide here was very helpful to get email going: How+to+setup+FreePBX+to+work+with+Office+365+Exchange+Email

I am running FreePBX 15.0.17.63. CENTOS and freepbx is up to date

Working through this DKIM wiki How-to+Enable+SPF+DKIM+DMARC+on+FreePBX I have hit a roadblock. messages are not being signed with the error: no signing domain match for ‘mydomain_com’

log:
mypbx postfix/cleanup[4378]: 7EF5B61A9DFF: message-id=<[email protected]_com>
mypbx opendkim[4105]: 7EF5B61A9DFF: no signing domain match for ‘mydomain_com’
mypbx opendkim[4105]: 7EF5B61A9DFF: no signing subdomain match for ‘mydomain_com’
mypbx opendkim[4105]: 7EF5B61A9DFF: no signature data
mypbx postfix/qmgr[4201]: 7EF5B61A9DFF: from=<[email protected]_com>, size=545, nrcpt=1 (queue active)

[[email protected] keys]# cat /etc/opendkim.conf
PidFile /var/run/opendkim/opendkim.pid
Mode sv
UserID opendkim:opendkim
Socket inet:[email protected]
Umask 002
SoftwareHeader yes
Canonicalization relaxed/simple
Domain mydomain_com
Selector freepbx
MinimumKeyBits 1024
KeyFile /etc/opendkim/keys/freepbx.private
#KeyTable /etc/opendkim/KeyTable
#SigningTable refile:/etc/opendkim/SigningTable
#ExternalIgnoreList refile:/etc/opendkim/TrustedHosts
#InternalHosts refile:/etc/opendkim/TrustedHosts
OversignHeaders From

[[email protected] keys]# cat /etc/postfix/generic
[email protected] [email protected]_com
[email protected]_com [email protected]_com
[email protected]_com [email protected]_com
@mypbx.mydomain_com @mydomain_com

I see the message id is *@mypbx.mydomain_com and the from field is [email protected]_com. my preference is to have the messages sending as [email protected]_com which matches the mailbox and presumably sign the messages, but I have not been able to accomplish this.

Any guidance is appreciated. thank you for taking a look.

[had to butcher this since new users are not allowed to post links]strong text

I was able to finally resolve this by configuring the SigningTable and enabling in the opendkim.conf.

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