Disrupt Linux and OSS blog

So I was trying to enable Cyrillic support for sendmail in RockyLinux8 / AlmaLinux 8 and found that it is not supported by sendmail 8.15 .2 which is currently available for these systems as of May 2022. Only sendmail version 8.17.x is supporting EAI (Email Address Internationalization) / SMTPUTF8 standard, as defined in RFC 6531…