https://first2host.co.uk/blog/install-exim-email-and-dovecot-on-ubuntu-and-debian-servers/ Fundamentals Explained
We're going to established a greater attachment limit to scan by modifying the default of 10M to 16M. We may also help other groups during the technique to utilize clamav. Also, comment out “Illustration” as proven down below:Immediately after confirming your server is functioning recent program, we can carry on with installing the mail server