Plesk fails to create TLSA records for domains with special characters: Incorrect DNS record values were specified

Symptoms

The SSL It! Plesk extension fails to create TLSA records for International Domain Names (IDN) because of the special characters they have (e.g. exámple.com):

Could not issue an SSL/TLS certificate for exámple.com
DetailsIncorrect DNS record values were specified: dns__host: _25._tcp.mail.exámple.com.

Cause

This is a product issue: #EXTLETSENC-1237.

Resolution

Follow this article to receive an update when a fix to this issue is released. For the time being, TLSA records can be published manually following our guide: How to create TLSA DNS record in Plesk and adjust DANE?