Abend Marcus, > Hast Du localhost in den Domains der Mailkonfiguration definiert? > > SMTP_LOCAL_DOMAIN_1='@' > SMTP_LOCAL_DOMAIN_2='localhost' jep SMTP_LOCAL_DOMAIN_N='4' SMTP_LOCAL_DOMAIN_1='@' SMTP_LOCAL_DOMAIN_2='localhost' SMTP_LOCAL_DOMAIN_3='fritz.box' SMTP_LOCAL_DOMAIN_4='dew.dyndns.org' Andreas