Hi i would like to ask what mail server do you use? Regards
Nightduke 2013/4/4 Matus UHLAR - fantomas <uh...@fantomas.sk>: > On 04.04.13 14:09, Josef Karliak wrote: >> >> we've one "collecting" smtp server (without SA), one antispam server (SA >> and this server sends outgoing email1) and one email server (cyrus imap >> server). We've about 3000 active email users - here is a fast picture >> >> http://www.ajetaci.cz/skola/epi/zumpa/rychle_zapojeni_firewall_antispam_email.png > > > So, when you accept mail from the net, you first collect it by an SMTP > server and then filter it out? I recommend the opposite, especially for > your case: > > - receive mail from internet directly to server that can do spam and > recipient checks, so you can REJECT both mail to unknown users and the > spam at SMTP level > - receive mail from local users by te same server, so you can do the same > checks (at SMTP time) > - have one extra SMTP server for special users or special cases as this one, > that can accept all the mail and submit through mail hub, which will > either pass through main server or SA-scan after accepting the mail > (you may have to deal with undeliverable spam, backscatter etc) > > - if you want special server for mailboxes (IMAP and POP3), if can receive > mail from the main server > > >> About filtering email - when the scanned email has SPF, Domainkeys or >> DKIM =="pass", I've some rules with SCORE "-10" or so, so the email is >> trustworthy. Including ours. > > > Are you aware that the whole fact that mail passes SPF or DKIM checks tells > COMPLETELY NOTHING about its spamminess? they can be spam as well, and I do > NOT recommend using SPF for anything than positive scoring when the mail > FAILS those tests. > > > -- > Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ > Warning: I wish NOT to receive e-mail advertising to this address. > Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. > "One World. One Web. One Program." - Microsoft promotional advertisement > "Ein Volk, ein Reich, ein Fuhrer!" - Adolf Hitler
