Questions about Mail Gateway

[Linksoft]

Dear team,

Good day!

Customer has set a role to block mails with blank subject, and they noticed it doesn’t work these days.
Customer is using Proxmox mail Gateway 6.4-4, please kindly see below screenshots and help us fix it.
Roles:

 

[Linksoft]

Dear team,

Good day!

Customer has set a role to block mails with blank subject, and they noticed it doesn’t work these days.
Customer is using Proxmox mail Gateway 6.4-4, please kindly see below screenshots and help us fix it.
Roles:

Any update for this project?
Thanks in advance.

 

[mira]

Please provide the headers, including the subject, of such a mail.

 

[Linksoft]

Dear Mira,

Please attached file, thank you !

 

[mira]

The issue in this case seems to be the space after `Subject:` -> `Subject: `.
You could rewrite the regex to match any space (^\s*$) instead.