Multiple communication addresses for the same certificate are not permissible. - Yash-777/Java_Mail GitHub Wiki

Rfc822Name is an ASN.1 X.400 generalName that is a string representing the RFC 822 eMailAddress (mail) Rfc822Name Example:ldapwiki

mail:[email protected]

X.509 Style Guide, Image from stack post

The parameter in the field “Subject Alternative Name" with the value "RFC822-Name=" must be completed with the communication address (specification of email address). In this way, exactly one communication address must be specified. Multiple communication addresses for the same certificate are not permissible.