How can you block SPAM? 16
Derek Pomery asks: "My personal address, which I have kept relatively pure, is slowly being overwhelmed. Procmail doesn't seem to be the solution, since most of the e-mail addresses are forged. Does anyone have any ideas on the problem? The only thing I can think of is checking to see if the domain is valid. However, besides sending a verification e-mail from a throw-away address to check for a bounce (which would be an annoying kind of return spam), I can't think of a way to check for an account's validity (unless finger is allowed).
Anyone have any spam killing strategies? Particularly for the annoying forged spam?
Just some simple method to deep-six anonymous e-mails into /dev/null "
Check To: (Score:2)
Most people's favourite: (Score:1)
It's very popular, and has a lot of very advanced features.
There's also lots of documentation.
Re:Most people's favourite: (Score:1)
Re:Most people's favourite: (Score:1)
;)
not sure (Score:1)
RBL (Score:1)
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"'Is not a quine' is not a quine" is a quine.
Procmail details (Score:1)
You might try taking a look at the following:
http://www.doofus.org/spam (Score:1)
Spam Information [doofus.org]
Re:RBL (Score:1)
Re:RBL/ORBS (Score:1)
What can you do to block spam? (and what I do) (Score:1)
Unfortunately, there are no really good ways to block spam, and the better ones require that you have access either to your main mail server or another mail server that can act as an intermediate. I'll assume that you don't have access to the mail server.
What do I do? I use a combination of fetchmail, procmail, and some custom Perl scripts to sort my mail. By the time I get to it with my MUA ( mutt [mutt.org] rules), it has already been cleaned out quite a bit. I have a list of past spammers that gets checked each time a new message comes in from someone my scripts don't recognize or isn't addressed directly to me. It's a bit of work to set up at first, but it's easier in the long run. One thing I've been toying with is creating a database of good and bad addresses, which I can call through Perl scripts from the server to which my mail actually goes (I have several accounts, through school, work, and my ISP). The scripts, and procmail, would run on the individual server, contacting my workstation, which would hold the database (a perl-based server, running on some random port, with a specialized interface to the database).
By the way, if you do have access to a mail server, get the latest version of sendmail [sendmail.org], which includes support for the Realtime Blackhole List (which someone already mentioned). It can reject mail based on the sender's originating IP address or domain, if they are known spammers. Very useful, although it can be a resource drain if you get a lot of mail or run a high volume mail server. I have a linux box on my desk which is my primary mail server, and I have all my email forwarded to that machine, which then checks the domains.
Re:Check To: (Score:1)
~GoRK
SPAM sort of (Score:1)
A few days ago I sent a message which was returned by an intended recipient's ISP with this message, "your server is an open relay, see http://www.imrss.org/ Service unavailable"
Going to the site i find that this is an organization which apparently complies lists of open relay sites and ISPs can use this information to block whole domains. I talked to my ISP, they said that they were not an open relay, I talked to the rejecting ISP, they were little help, the recipients of the bounced email did not get any information.
When I search for this organization I find very little information. I am wondering if anyone on this forum has information on this organization.
i manage a tech support group doing support for a lot of games, educational and edutainment things. We send a lot of email around the world. we had never run into this before, i am trying to evaluate the impact of this on our ability to function. is this a list that is widely subscribed to? My ISP and my IT department had not heard of this organization.
So far, my contact with them has been less than positive. I have been called names, had my intelligence and integrity challenged and been sworn at. Behavior i would not condone on any of my support teams.
Cathy