Show HN: Everything I learned in the past 2 years

I would have been surprised if this was different!

> The first thing I opened, "IT operations", and the very top item is false.

You seem to be talking about the SMTP ports, right? What do you suggest instead? Port 465 with SSL/TLS and only as a secondary solution 587 with STARTTLS?

The current statement was based on [1] which recommends not to use port 465 but instead only 587 with STARTTLS. Granted, with STARTTLS, you have some additional attack vectors.

[1] http://blog.mailgun.com/25-465-587-what-port-should-i-use/

If only a single person finds something helpful there, it has been worth the effort already. So that's what I hope will happen.

Apart from that, writing down things you've learned for yourself is pretty useful in general, as well.