On 23-09-2014 12:31, Reindl Harald wrote: > [...] > no reason for that: smtpd_data_restrictions = reject_unauth_pipelining
its goood, the reason is to block clients who speak to early like spammers for example. http://www.postfix.org/postconf.5.html#reject_unauth_pipelining "This stops mail from bulk mail software that improperly uses ESMTP command pipelining in order to speed up deliveries."
