On 3/31/2017 2:15 PM, Valeri Galtsev wrote:> Well, it sounds like you are one of the companies with whose effort I have > to fight constantly in my own effort to protect our users from spam...What makes Postfix superior in fighting spam? How do I integrate MIMEDefang, SpamAssassin, and ClamAV with Postfix? Are there migration guides for moving one's Sendmail anti-spam and AV configurations to Postfix? --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
On 03/31/2017 02:40 PM, Kenneth Porter wrote:> On 3/31/2017 2:15 PM, Valeri Galtsev wrote: >> Well, it sounds like you are one of the companies with whose effort I >> have >> to fight constantly in my own effort to protect our users from spam... > > What makes Postfix superior in fighting spam? > > How do I integrate MIMEDefang, SpamAssassin, and ClamAV with Postfix? > Are there migration guides for moving one's Sendmail anti-spam and AV > configurations to Postfix? > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centosI don't know about MIMEDefang but SpamAssassin and ClamAV are pretty straight forward. There are guides for both with Postfix all over the net. MIMEDefang I have not heard of, but unless it does something really funky I suspect it also is easy to set up with Postfix.
On Fri, March 31, 2017 4:46 pm, Alice Wonder wrote:> On 03/31/2017 02:40 PM, Kenneth Porter wrote: >> On 3/31/2017 2:15 PM, Valeri Galtsev wrote: >>> Well, it sounds like you are one of the companies with whose effort I >>> have >>> to fight constantly in my own effort to protect our users from spam... >> >> What makes Postfix superior in fighting spam?I actually made two independent statements: 1. That I use postfix forever (postfix was written by Wietse Venema with security in mind). 2. That the company the OP works for judging from my reading of OP's post makes money by facilitating the creation of spam (by their customers). By no means I meant to say posfix is superior to sendmail in fighting spam. Neither of them is designed for fighting spam, each of them is merely MTA. Postfix, however, having human readable configs with rather logical logics makes it easier (for me) to administer, therefore easier (for me again) to integrate with anti-spam components (amavisd, spamassassin, clamav - the last to scan for viruses - or rather virii I should say as that is plural of latin word ;-) Just my $0.02. Valeri>> >> How do I integrate MIMEDefang, SpamAssassin, and ClamAV with Postfix? >> Are there migration guides for moving one's Sendmail anti-spam and AV >> configurations to Postfix? >> >> >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos > > I don't know about MIMEDefang but SpamAssassin and ClamAV are pretty > straight forward. There are guides for both with Postfix all over the net. > > MIMEDefang I have not heard of, but unless it does something really > funky I suspect it also is easy to set up with Postfix. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
On 3/31/2017 2:46 PM, Alice Wonder wrote:> I don't know about MIMEDefang but SpamAssassin and ClamAV are pretty > straight forward. There are guides for both with Postfix all over the > net. > > MIMEDefang I have not heard of, but unless it does something really > funky I suspect it also is easy to set up with Postfix.From the MIMEDefang website:> MIMEDefang is an e-mail filtering tool that works with the Sendmail > "Milter" library. MIMEDefang lets you express your filtering policies > in Perl rather than C, making it quick and easy to filter or > manipulate your mail.It will detect a SpamAssassin and ClamAV installation and invoke it site-wide, rejecting virii and extreme spam before it gets to the delivery agent (eg. procmail), quarantining it for administrative review and sending a quarantine notification to the recipient. http://mimedefang.org/ Reading around, it looks like Postfix supports milters and people have gotten MD working with it. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
On 01/04/17 10:40, Kenneth Porter wrote:> What makes Postfix superior in fighting spam?One major feature that comes to mind is postscreen: http://www.postfix.org/POSTSCREEN_README.html http://www.postfix.org/postscreen.8.html> How do I integrate MIMEDefang, SpamAssassin, and ClamAV with Postfix?There are many guides online that tell you how to do this.> Are there migration guides for moving one's Sendmail anti-spam and AV > configurations to Postfix?Let me google that for you: http://lmgtfy.com/?q=sendmail+to+postfix Peter