how do I solve MAILER-DAEMON mail issues on my computer is there a download to fix the problem?

Hello everyone,
I have had Webroot now for a little over a year and in all the previous years that I had some type of security system on my previous computers never have I seen a more comprehensive,systematic and detailed type of security system than Webroot; it surpassed my expectations in terms of various types of security on so many levels; saying its the top of the line in home security does not even come close. I am sure that recently....oh I would say around the end of December of last year I was experiencing some MAILER-DAEMON issues on my computer where i would send e-mails to a LEGIT website and in return i would get pages and pages of computer language format.......AKA(MAILER-DAEMON) type of writing. I am hoping that webroot will provide either a free downloadable file or link where i can once again receive some responses from messages that i sent. To all of you a more successful year in 2016.....lets make WEBROOT the best security system not only nationally yet lets rumble on a international stage and let our voices be heard on what WEBROOT has achieved thus far but what it can achieve in the future years ahead.