Hello Robert, thanks for your reply.
Can i also set the original sender address as the address_verify_sender? I wasnt able to find anything in the manual :-/ Thanks, Mario On Fri, Aug 15, 2014 at 11:12 AM, Robert Schetterer <r...@sys4.de> wrote: > Am 15.08.2014 um 10:36 schrieb li...@rhsoft.net: > > > > > > Am 15.08.2014 um 08:22 schrieb ml ml: > >> why does postfix use a empty from=<> envelope when it tried to verify > the recioient? > > > > * because it is the correct way of doing it > > * because an ordianry address may get blocked > > * because the other side knows and has to know > > that this is a bounce or verify call and > > handeled differently (never ever autorespond...) > > > > http://en.wikipedia.org/wiki/Bounce_message > > Bounce messages in SMTP are sent with the envelope sender address <>, > known as the null sender address > > > > ... > address_verify_sender (default: $double_bounce_sender) > > The sender address to use in address verification probes; prior to > Postfix 2.5 the default was "postmaster". To avoid problems with address > probes that are sent in response to address probes, the Postfix SMTP > server excludes the probe sender address from all SMTPD access blocks. > > Specify an empty value (address_verify_sender =) or <> if you want > to use the null sender address. Beware, some sites reject mail from <>, > even though RFCs require that such addresses be accepted. > > Examples: > > address_verify_sender = <> > address_verify_sender = postmaster@my.domain > > > > Best Regards > MfG Robert Schetterer > > -- > [*] sys4 AG > > http://sys4.de, +49 (89) 30 90 46 64 > Franziskanerstraße 15, 81669 München > > Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 > Vorstand: Patrick Ben Koetter, Marc Schiffbauer > Aufsichtsratsvorsitzender: Florian Kirstein >