LOG: MAIN REJECT
H=[V4NET.0.0.3] U=root F=<uncheckable@localhost1> temporarily rejected RCPT <z@remote.domain>: Could not complete recipient verify callout
LOG: smtp_connection MAIN
SMTP connection from root closed by QUIT
LOG: smtp_connection MAIN
SMTP connection from root
LOG: MAIN REJECT
H=[V4NET.0.0.3] U=root F=<uncheckable@localhost1> temporarily rejected RCPT <z@remote.domain>: Could not complete recipient verify callout
LOG: smtp_connection MAIN
SMTP connection from root closed by QUIT
LOG: smtp_connection MAIN
SMTP connection from root