Newsletter Template Error - is not a valid hostname for email address

[raymond62]

Version is Magento 2.2.2

Try to create/update a Newsletter Template "Sender Email" is not validating correctly.
I get following Error.

'mydomain.shop' is not a valid hostname for email address 'support@mydomain.shop'
'mydomain.shop' appears to be a DNS hostname but cannot match TLD against known list
'mydomain.shop' appears to be a local network name but local network names are not allowed

mydomain.eu e.g. is doing fine.

[magento-engcom-team]

@raymond62, thank you for your report.
We've acknowledged the issue and added to our backlog.

[Laura021]

#MagetitansMX

[magento-engcom-team]

@Laura021 thank you for joining. Please accept team invitation here and self-assign the issue.

[santhoshp]

I am working on this at #dmcdindia