My user's get sometimes bounces containing an empty error message, sometimes the mail is delivered correctly, sometimes not (maybe it works every time) I believe it could be TLS; i've got these problems since qmail-ldap-20010301 (with controls, auth-smtp, dash-trick patches) It occurs only with certain mail hosts: 220 UTMEM2.UTMEM.EDU -- Server ESMTP (PMDF V6.0-24#46457) 220 pigpen.bl.physik.uni-muenchen.de ESMTP Sendmail 8.11.3/8.11.3 (this is mailhost.physik.uni-muenchen.de) 220 mail.camelot.de ESMTP Sendmail 8.11.2/CameloT; All three of them offer STARTTLS, ENHANCEDSTATUSCODES etc. I can't find another TLS supporting host in order to test my suscpicion that the problems are due to tls. Did i forget something? (when i connect to the server via smtp and mozilla encryption works, mozilla gives me the site certificate to accept; so qmails does find the certificate) Greetings, Erich