Regex to exclude list of domain in an email field not working

Question

I'm trying to block certain domains from being accepted as an email.

I have looked online and found many answers but I cannot make them to work on my website

My current syntax is:

^(.+@)(?!domain_a|domain_b\.com)([A-Za-z0-9]+\.com)$

It works on a regex checker but fails on the site itself.

See https://stackoverflow.com/questions/39636124/regular-expression-works-on-regex101-com-but-not-on-prod. If that does not help, add the code to the question. — Wiktor Stribiżew, Jun 05 '20 at 09:48
Only accepting email addresses in the `.com` top-level domain is obviously infuriating for anyone in `.edu` or a country TLD. Many email providers use ccTLDs like `.io` and `.cc` just for coolness. Please don't proliferate this horrible antipattern. — tripleee, Jun 06 '20 at 10:24

score 0 · Accepted Answer · edited Jun 05 '20 at 10:32

0

Found the answer, maybe it is specific to the CMS, but the requirement was to add:

regexp=^/(.+@)(?!domain_a|domain_b.com)([A-Za-z0-9]+.com)$/^

edited Jun 05 '20 at 10:32

Wiktor Stribiżew

answered Jun 05 '20 at 10:14

agora

What CMS? Where are you using the regex? – Wiktor Stribiżew Jun 05 '20 at 10:32
modx cms. I'm using it as a hook to filter emails using formit extra – agora Jun 06 '20 at 10:09
So, https://forums.modx.com/thread/90219/how-to-use-regx-in-formit solves the issue – Wiktor Stribiżew Jun 06 '20 at 10:10

1 Answers1