This article provides information about the compatibility of Kerio Connect and Cyrillic symbols in the email addresses and a solution to fix the issue. When you are trying to send an email with Cyrillic letters in an email address, you get the following error:
Please fix email address
Kerio Connect does not support Cyrillic Symbols for email addresses. As a workaround, you can convert these symbols to Punycode using either of the below methods:
Refer to this Bash guide explaining how to do the conversion step by step. The script can then use the Kerio Connect API to submit the corrected email address.
The browser alternative is to convert using the Punycode converter website. Punycode is acceptable for the email address, and the email will be processed successfully.