Dovecot Line to send emails from STMP / PHP

Hi.

i lost one line of code i had to add to /etc/dovecot/dovecot.conf to be able to send emails from a php / Mysql website. it’ something like the following bellow. Anyone have any idea ?

service stats {
unix_listener stats-writer {
group = mail
mode = 0660
user = dovecot
}
}

My dovecot.conf starts like this, if that’s any help.

protocols = imap pop3
listen = , ::
base_dir = /run/dovecot/
login_greeting = Mail Delivery Agent
!include conf.d/.conf
!include_try conf.d/domains/*.conf

service stats {
unix_listener stats-writer {
group = mail
mode = 0660
user = dovecot
}
}

But sending emails is more to do with exim than dovecot …

Thanks!