I installed the patch for SuSE 8.0-Qpopper: linuso:/var/cache/fou4s/packages/ftp.gwdg.de/i386/update/8.0/n4 # popper -v Qpopper Modified by SuSE version 4.0.3 (non-standalone) linuso:~ # rpm -qa | grep popper qpopper-4.0.3-178 linuso:/var/cache/fou4s/packages/ftp.gwdg.de/i386/update/8.0/n4 # popauth -version popauth v4.0.3 After this it is not possible for the external users to authentificate with smtp. The mail.log shows like this: May 19 18:03:28 linuso postfix/smtpd[1638]: connect from unknown[195.243.195.231] May 19 18:03:28 linuso postfix/smtpd[1638]: 743BCCF4: client=unknown[195.243.195.231] May 19 18:03:28 linuso postfix/smtpd[1638]: reject: RCPT from unknown[195.243.195.231]: 554 <MRebentisch@comparat.de>: Recipient address rejected: Relay access denied; from=<ingo@net-market.de> to=<MRebentisch@comparat.de> May 19 18:03:36 linuso postfix/smtpd[1638]: disconnect from unknown[195.243.195.231] In postfix's main.cf is the entry: smtpd_recipient_restrictions = permit_mynetworks, check_client_access btree:/etc/postfix/dracd, check_sender_access btree:/etc/postfix/dracd, check_relay_domains I think, that qpopper is not compiled for dracd ? Or is there another reason for the "Relay access denied"? Manfred Rebentisch -- COMPARAT Software-Entwicklungs-GmbH Mobile Voice Solutions Prießstr. 16, 23558 Lübeck Tel: 0451/479 56 60 Fax: 0451/871 090 26 http://www.comparat.de http://www.mobile-voice.de