Backend: fix IPv6 address parsing erroneous (#28585)

* Backend: Fix parsing of client IP address

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/services/notifications/mailer.go

@@ -88,7 +88,6 @@ func (ns *NotificationService) setFiles(
 
 func (ns *NotificationService) createDialer() (*gomail.Dialer, error) {
 	host, port, err := net.SplitHostPort(ns.Cfg.Smtp.Host)
-
 	if err != nil {
 		return nil, err
 	}