We installed hmailserver in windows and did required configuration in DNS. The emails are working fine. But with limitation on other servers like google. It delivers to spam folder. After investigating the header we believe the issue should be because of the below given message.
ARC-Authentication-Results: i=1; [login to view URL];
dkim=temperror (no key for signature) header.i=
If you feel that you can solve this issue only then you can apply. Payment will be done only if this email server delivery issue is resolved. We don't want any misunderstandings on the requirement. Payment will be done only if this email server delivery issue is resolved and the email is delivered to inbox and not spam folders.
I am Microsoft system engineer working on Windows server since 2008 to Windows server 2016 and Exchange since 2010 to Exchange 2019 , can create your DKIM record