Changing the colors in Vim so it looks better in PuTTY. I live with this usually (as I don’t spend much time in Linux nowadays) until I Googled today and found an easy fix for this. Thanks to this post: “
:color desert” (where desert is an example color).
Testing SSL in SMTP (thanks to):
openssl s_client -connect mail.example1.hu:25 -starttls smtp
That link is a good reference on Postfix SSL too.