We recently had to replace our postfix HDD's and migrated the data across. Since doing so, we're bouncing a lot more messages away. I'm also noticing that self signed certificates are being rejected . Oct 29 08:35:48 ferengi postfix/smtp: certificate verification failed for mx.junkemailfilter.com: num=18:self signed certificate We also use self signed certs, I'd hate to think our clients are also being rejected for this. How can I setup postfix to allow self signed certs? Our system is Debian etch and we used the life saving Perfect Setup with ISPConfig. Any suggestions appreciated. Thanks!