* Robert Schetterer <r...@sys4.de>: > Am 30.11.2012 11:44, schrieb Tomas Macek: > > I cannot apply firewall rules on 587, because our clients travel with > > their notebooks and still want to send their emails through our mailserver. > > use fail2ban etc for blocking dynamic, brute force attacks to > submission, normally this never matched on legal clients cause they know > their passwords and submission should used only, with password auth and > tls , if afraid for dummy users, choose low blocking time
That should be sufficient! -- [*] 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: Joerg Heidrich
