Spent this afternoon implementing DKIM Proxy, all with complete success apart from signing DKIM on port 25 outbound. I have a couple of questions, if I may…
Port 587 and 465 happily accept and sign outgoing SMTP. However, I just cannot get port 25 to sign outbound mail. What am I doing wrong, please?
Secondly, I believe the instructions at
jason.long.name/dkimproxy/faq.html to be critically incorrect with regards to one entry:
Yes. In your master.cf, look at the example for using the submission port, and add those same parameters to the smtp service. E.g. you might have…
smtp inet n - n - - smtpd
The smtpd_recipient_restrictions entry will actually reject all e-mail bar from IPs in my_networks or sasl_authenticated (ie, 99% of e-mailed will be perm failed!!). Can these instructions please be altered to stop anyone experiencing such an outage…
Any advice on my port 25 issue, appreciated.