pm me the domain name and your server IP address with pass
Will share you team viewer details if you are comfortable, so that I will learn as well.
Regards,
you can try to put the domain tld if their is no domain name.
I have following domains under /etc/opendkim/TrustedHosts
# OPENDKIM TRUSTED HOSTS
# To use this file, uncomment the #ExternalIgnoreList and/or the #InternalHosts
# option in /etc/opendkim.conf then restart OpenDKIM. Additional hosts
# may be added on separate lines (IP addresses, hostnames, or CIDR ranges).
# The localhost IP (127.0.0.1) should always be the first entry in this file.
127.0.0.1
::1
#host.example.com
#192.168.1.0/24
test.bt
tshetum.bt
testsin.bt