Im actually testing signing outgoing mails with domainkeys, but have some trouble. I configured the DKIM features like in the E-learning module described. I also inserted the RSA key in TXT section of the DNS-server.
If I send a mail to yahoo, it is recognized as SPAM and seems to have no valid DKIM signature.
here you see a part of the Ironport mail-log:
... Dec 17 09:56:20 antispam-iat mail_logs: Info: MID 32848 DomainKeys: cannot sign - no profile matches firstname.lastname@example.org Dec 17 09:56:20 antispam-iat mail_logs: Info: MID 32848 DKIM: signing with MyProfile1 - matches email@example.com ...
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...