GitLab does not accept @vfemail.net email addresses even though they're OK
Summary
I tried to set my @vfemail.net email address as my default GitLab email address. I am able to add the address to my account, but not as the main email address (I currently use it as my public email on my profile). Currently, I use my @openmail.cc address for my account, which is an alias for my VFEmail inbox, and is one of the email domains that belong to the VFEmail provider.
Steps to reproduce
Have an @vfemail.net email address, add it to your GitLab account and try to set it as your main email address.
Example Project
What is the current bug behavior?
I receive an error message on the GitLab website telling me the email address is invalid and I should "use my own email". Presumably, GitLab thinks VFEmail is one of those disposable address providers, like 10minutemail, etc.
What is the expected correct behavior?
I should be able to set my @vfemail.net address as my main email address, as it is a regular, valid, permanent email.
Relevant logs and/or screenshots
Output of checks
This bug happens on GitLab.com
Results of GitLab environment info
Expand for output related to GitLab environment info
(For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:env:info`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)
Results of GitLab application Check
Expand for output related to the GitLab application check
(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)(we will only investigate if the tests are passing)