I found a case that vacation reply message always capture the first recipents of the sender email
eg. mydomain is xyz.com and firstname.lastname@example.org set autoreply vacation message.
When I use hotmail account to send email to email@example.com;firstname.lastname@example.org;email@example.com
I don't know why "firstname.lastname@example.org" displayed as autoreply message sender name instead of email@example.com.
Can anyone help me? No matter I used postfixadmin 2.2 or 2.3, same result.