Dear Janos Zsako, I wish to draw your attention to ripe-120. There, under "Authentication Schemes; MAIL-FROM" it states: This authentication method checks the content of the RFC822 From: header of an update request against the regular expression specified as <auth-info>. As Daniel has already stated, those with really high security requirements shoud use maintainers with a stronger authentication menthod. Regards, Ambrose Magee ____________________________ RIPE Database Administration.