Mailscanner's stopped signing messages?

[Paul Hutchings]

As subject - it used to and other than a recent upgrade I don't believe
I've changed anything.

How can I debug this on a production box to find out why it's not doing
it please?

Mailscanner.conf contains:

Sign Clean Messages = %rules-dir%/signature.rules

And

[root at relay log]# cat /etc/MailScanner/rules/signature.rules
# Only sign outbound mail
From:           someaddress at us <dot> co.uk         no
From:           193.35.217.x                  yes
From:   *@ us <dot> co.uk and From:  193.35.217.x   yes
FromOrTo:       default                         no

Cheers,
Paul