For the past couple of days I've been trying in vain to setup domainkey filtering with postfix. I've followed the tutorial at http://www.howtoforge.com/postfix_dk...implementation and have been through john longs (http://jason.long.name/dkfilter/) example numerous times but my mails simply aren't being signed. In my postfix log I get the following
I've followed both examples closely and read around fairly extensively, This is driving me nuts.
my master.cf looks like this
All the mails are generated by a Rails app on the localhost.
Fedora Core 6
If there's another surefire way to sign with domainkeys let me know :)
I too am having the same problem, but I did get the policy to verify.
for the policy make sure you have a TXT entry in your dns for the policy with your TXT entry for the key.
_domainkey.yourdomain.com IN TXT "t=y; o=~; n=http://www.mydomain.com/contact.html"
restart dns then wait for dns to update.
you can check it locally
# dig _domain.yourdomain.com TXT
Remote CMD check
> set type=txt
but I still get a "no signature" even though my key is verified and pass, but yahoo " DomainKeys verification - neutral (no signature; domain testing);"
Solved my issue.
I missed the part about port 587. In order to have email signed you need to change the outbound port from 25(default) to 587. In Outlook I went to my account properties Advanced Tab. (for each account). I now that it can be a hassel to have all you clients change this in outlook, but domainkeys cannot sign and verify on the same port. In Webmail I changed the smtp.class.php and phpmailer.class.php to use port 587 instead of 25. This important if your users will be using your server side email programs such as talaen or squirrelmail. My classes for talaen were in /webmail/inc/.
Although I recently changed from dkfilter to DKIM and still holds true for DKIM.
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