> > This is part of the SASL authentication RFC. > > 5. The AUTH parameter to the MAIL FROM command > > AUTH=addr-spec > > Arguments: > An addr-spec containing the identity which submitted > the message > to the delivery system, or the two character sequence "<>" > indicating such an identity is unknown or insufficiently > authenticated. To comply with the restrictions > imposed on ESMTP > parameters, the addr-spec is encoded inside an xtext. > The syntax > of an xtext is described in section 5 of [ESMTP-DSN]. > > If you don't want this, disable SASL in the Postfix SMTP client: > set "smtp_sasl_auth_enable = no" in main.cf, or configure the > Postfix SMTP client to ignore the AUTH verb in the remote SMTP > server's EHLO response (smtp_discard_ehlo_keyword_address_maps > or smtp_discard_ehlo_keywords). > > Wietse
Thanks for your reply. i try to understand it. Postfix adds the AUTH=<> because of "such an identity is unknown or insufficiently authenticated." The main mail server ist not a postfix maschine but an Axigen Server. (axigen.com) so i can't set up "smtp_discard_ehlo_keyword_address_maps or smtp_discard_ehlo_keywords" If "smtp_sasl_auth_enable = no" is configured on the client, i won't try to authenticate anymore. So at the moment exchange is probably violating RFC but working. :) So is it possbile to tell postfix, that all messages are "sufficiently authenticated" so that it no AUTH=<> is send? Here the graphical setup :) webserver || Postfix Relay || Axigen Mailserver Thanks Dominik
