Improve the "Your email address must not include plus signs (+) or dots (.)" message

Summary

When registering for a new Eclipse Foundation account, or attempting to change the email address used for an existing Eclipse Foundation account, the form incorrectly blocks some email addresses with the message "Your email address must not include plus signs (+) or dots (.).".

This is clearly incorrect as all email addresses contain dots, and the form does allow email address containing dots. I attempted to register with an email of the form .@gmail.com and was blocked with this error message, but was able to register with an email of the form .@eagereverest.com. I was also unable to change my email to the gmail.com address using the "Change Email form".

Steps to reproduce

1. Go to https://accounts.eclipse.org/user/register
2. Attempt to create an account using an email address of test.t@gmail.com
3. Observe the error message "Your email address must not include plus signs (+) or dots (.)."

What is the current bug behavior?

Cannot create a new account or change email for existing account due to error message "Your email address must not include plus signs (+) or dots (.)."

What is the expected correct behavior?

Able to create a new account or change email for existing account without error

Relevant logs and/or screenshots

Error message: "Your email address must not include plus signs (+) or dots (.)."

Priority

• Urgent
• High
• Medium
• Low

Severity

• Blocker
• Major
• Normal
• Low

Impact

Can block users from registering new accounts.