Am 02.06.2014 18:05, schrieb st...@thornet.co.uk: >> >> you *do not* lose anything >> >> 451 is a *temporary* error >> 5xx would be a complete reject >> > > Yes, but many mails rejected in an incident this morning haven't been > resent. I guess we're dealing with broken clients.
perhaps, but this is not "your" problem, the sender has to fix it, some more workaround may use greylist more selective like perhaps read https://sys4.de/de/blog/2013/10/09/selektive-rbl-spf-greylisting-checks-mit-smtpd_restriction_classes/ sorry german, but setup should speak for its own > > Steve > 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