openssl error due to avast self signed cert on my website????

Avast Free Antivirus / Premium Security
1

Sending test email using OpenSSL I get following error?

AUTH PLAIN d2VibWFzdGVyQGJ3bWpjbS51cwB3ZWJtYXN0ZXJAYndtamNtLnVzAHdtQDQwOTEzV00=
235 Authentication succeeded
MAIL FROM: webmaster@bwmjcm.us
250 OK
RCPT TO: webpass@bwmjcm.us
RENEGOTIATING
depth=1 OU = generated by Avast Antivirus for SSL/TLS scanning, O = Avast Web/Ma
il Shield, CN = Avast Web/Mail Shield Root
verify error:num=19:self signed certificate in certificate chain
RCPT TO: webpass@bwmjcm.us
RENEGOTIATING
depth=1 OU = generated by Avast Antivirus for SSL/TLS scanning, O = Avast Web/Ma
il Shield, CN = Avast Web/Mail Shield Root
verify error:num=19:self signed certificate in certificate chain

What is Avast cert doing in this process?

2

When I try sending secure email I get pop up to allow Avast cert. This is BS. Get this crap off my site