Am 16.05.2014 21:03, schrieb Oscar del Rio:
On 05/13/14 03:02 PM, Stephan Bosch wrote:
Use of NULL envelope sender is generally recommended to prevent mail loops
Unfortunately, many servers out there reject emails with NULL sender. Some recent examples (real server names edited) :
... while talking to antispam1.*.ca.:
DATA <<< 550 Empty envelope senders not allowed
... while talking to smtp.*.net.:
MAIL From:<> SIZE=1096 <<< 550 5.1.0 <> Blank From: addresses are not allowed. Please provide a valid From: IB501 <http://x.co/srbounce>
... while talking to spam.*.edu.cn.:
DATA <<< 553 Requested action not taken: NULL sender is not allowed
... while talking to mail.*.co.kr.:
MAIL From:<> <<< 501 bad sender address expression.
... while talking to antispam.*.com.:
MAIL From:<> <<< 501 Syntax error in address
you will find any kind of bad config in www if you search for it
http://www.postfix.org/postconf.5.html
... Beware, some sites reject mail from <>, even though RFCs require that such addresses be accepted. ...
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