postfix/dovecot: SASL Auth in SMTP für alle EMails (telnet)

Olaf Zaplinski olaf at
Di Sep 8 13:33:21 CEST 2015

Am 2015-09-08 13:07, schrieb christoph.machon at
> MAIL FROM:<foo at>

Vorsicht bei Tests mit validen Absendern.

Der MXer dieser Domain ist übrigens lustig:

# telnet 25
Connected to
Escape character is '^]'.
220 ESMTP spamd IP-based SPAM blocker; Tue Sep  8 
13:31:04 2015
250 Hello, spam sender. Pleased to be wasting your time.
mail from:<olaf at>
250 You are about to try to deliver spam. Your time will be spent, for 
rcpt to:<foo at>
250 This is hurting you more than it is hurting me.
451 Temporary failure, please try again later.
Connection closed by foreign host.



Mehr Informationen über die Mailingliste Postfixbuch-users