I used to use that approach, but found in the last several years more than half the web sites I use reject email addresses with “+” characters.

I even use several sites that used to take those addresses just fine now reject them. That made me wonder if some common JS package for parsing email addresses got changed.

All of them. Corp directive (now) is that hosts must be updated or reimaged every 90 days.

I think they’re trying to simplify the exposed interfaces simplifying everyone else’s job at the expense of making a more complex implementation.

At my company, we have around 400,000 servers in production. When we last surveyed them, we found several thousand over 12 years old, with the oldest at 17 years. And that wasn’t counting our lab and admin servers which could run even older because they’re often repurposed from prod decomms.

We had a huge internal effort to virtualize their loads, but in the end, only about 15% were transferred just due to the sheer number of hidden edge cases that kept turning up.