Hi, I recently tried adding DKIM/DomainKeys to postfix using DKIMproxy. It signs things just fine, but connections were slowed down to the point that I've had to remove it. When telnetting to port 587 (25 is only used for incoming mail) with it enabled the response to the RCPT TO: command takes 30 seconds or more, without it the response is 3 to 6 seconds.
Can anyone recommend a method to do the signing without such a large performance hit? I'm already using amavisd-new with clamav for incoming mail, so I was wondering whether that would be better. Thanks Guy -- Don't just do something...sit there!
