Magento doesn't recognise .store as valid TLD

[JangriX]

Preconditions

1. Fresh magento install, version 2.1.7

Steps to reproduce

1. Go to website configuration
2. Select any field that deals with email addresses
3. Enter any email address with .store domain, like example@example.store
4. Save configuration

Expected result

1. Configuration is saved

Actual result

1. An error appears: Please correct the email address: "info@example.store".

.store is valid TLD since 2016, and I imagine quite relevant to e-commerce.

Currently the only workaround is to set the values manually through the database, and so far I've observed no adverse effects from this, thankfully.

[orlangur]

Hi @jangri, thanks for a well-formed bug report!

It is a duplicate of #4547 and already fixed on 2.2 branch.