Extending SpamAssassin and Amavis 25
An anonymous reader writes "Spam filtering solutions are a necessary evil in today's e-mail climate. There are many different tools and systems available for the filtering and removal of spam e-mail. Tools like SpamAssassin and more detailed agents, such as Amavis use a variety of different methods to identify and capture spam. An IBM article shows how you can extend SpamAssassin and Amavis, providing additional filtering facilities to lower the amount of spam hitting e-mail boxes."
Our just use GMail... (Score:2, Interesting)
Re: (Score:2)
Re: (Score:1, Informative)
Re: (Score:2)
GMail supports IMAP.
Indeed. But when I last looked, it used IMAP in a very strange way, that no mail client had good support for.
Here is a list that a client needs to be able to support for the best Gmail/IMAP experience:
Re: (Score:2)
* IMAP folders work, but for some reason on the web interface it calls them "labels" and lists them all in a tiny little side panel in a flat list, not as a hierarchy of folders.
* Occasionally the folders fail to synchronise for an hour or so at a time then mysteriously start working again.
* Only this morning I had a message that I just couldn't mark as read - kept popping up as an unread message on the next sync (argh!)
* The whole IMAP service is
I said it once, and I'll say it again... (Score:2, Informative)
1. I know WHERE the SPAM is comming from and who rat my email out.
2. I can close that specific alias and no more SPAM.
Using the above technique, I see ZERO SPAM... like good old days of emailing.
Nice (Score:2)
Re: (Score:1)
So all open until I get spam from one of them and then I close it. As long as you have a fairly unique grouping forum.*@ news.*@ etc, no problem at all.
You see, in my opinion having ONE email and gi
Re: (Score:1)
Another thing, to automate the above, I found this tool called "Outlook bells & whistles" ( http://www.emailaddressmanager.com/outlook-bells.html [emailaddressmanager.com] ) pretty cheap too, it's an add-on you can install on top of Outlook and you can set rules like "If emailing to a specific person, t
Re: (Score:2)
Re: (Score:1)
Re: (Score:2)
It's about spending money on something that should be a standard default feature.
Paying an extra $20 for a car door isn't gonna break the bank, but you wouldn't expect a car to arrive without it's doors.
And it soon adds up, seems stupid to keep wasting small amounts of money.
Re: (Score:2)
Re: (Score:2)
mail@slashdot.org.mydomain.com
That way, not only do i know who ratted me out, but i can also change the MX records to point back at their own servers.
As for public boards, they should not really be posting plain email addresses. Tho it's fairly easy to identify when this has happened rather than someone ratting out my address.
On the other hand, slashdot's mail obfuscation has some interesting results, i quite often get mails to things l
What a useless article. (Score:2)
Recently I've implemented greylisting [wikipedia.org] on my mail server. The drop in spam has been enormous, though there have been a couple cases where email didn't go through on the first try.
Essentially it's a step inserted into the SMTP transfer. The first time a given email+ip address attempt to send you mail, the server responds "try again later". If it tries again afte
Re: (Score:3, Insightful)
Well, since Amavis/Spam Assassin don't do what the article addresses out of the box, much of what's listed in it is useful. However, anyone interested in this article should probably check out Maia Mailguard [maiamailguard.com], which does most of what the article talks about and much more, with a web interface.
Re: (Score:2)
Yes, greylisting is nice. However, this has nothing to do with Amavis/SA.
Nothing except that it's another spam fighting technique, which is the ultimate goal here.
Re: (Score:2)
Anyone that's done much exploration of spam filtering already knows the basic architecture of self-learning filters. This article has nothing new.
Which might be why the article is completely different than your one-sentence summary of it.
Bayesian filtering is briefly mentioned as a solution in the introduction of the article, before the author gets into the real meat of his suggestions on improving that baseline - spam-reporting mailboxes that are automatically processed and passed to SpamAssassin and Razor, improving the implementation of whitelists and blacklists, mail filtering for easier manual processing, and generating reports to determine
Re: (Score:2)
Using that Perl script to dredge the spamtrap mailbox via IMAP makes an easy source to train against.
Re: (Score:2)
Seriously, go read the article.
I did read the article. It had nothing useful in it for me.
Flexible smtp daemon? (Score:2, Informative)
Since I implemented filtering. (Score:2)
I have the following config in my sendmail.mc: