Am 21.08.2013 09:59, schrieb Per-Erik irt Persson: > Or is smtpverification just a path that you don't want to walk down?
please read i.e http://www.postfix.org/ADDRESS_VERIFICATION_README.html .... Sender address verification for all email Unfortunately, sender address verification cannot simply be turned on for all email ... so ,in short words , you may do sender verify in very very special cases but never do it global, sender may be forged, so your verify does smtp to orig servers of forged mail addresses, so at the end your server may get blacklisted , also it doesnt work very fine with "greylisting" servers try better ways, i.e analyze your logs see if spf, dkim check may help etc 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, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
