Tag: mail
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E-Mail an Techniker und Nerds
Ich weiß, Nerds (und dazu zähle ich auch) sind ein oftmals schwieriges Volk. Auch beim Thema E-Mail liegen wir etwas abseits der Normen wie eine kurze Vorstellung einer selbst, kein Sarkasmus oder Zynismus und auch ma...
Mails im Jahre 2014
This is an HTML email – please view it in a web-based email client. Thanks Wir haben das Jahr Zweitausendundvierzehn da muss ich wirklich so etwas nicht mehr in meinem Mailclient lesen. Als Stichwort werfe ich MIME in...
Starvation
My mailserver got some nice features to fight spam. One of them is the well known filter SpamAssassin , being the last line of defense here. In theory, a nifty setup, if you kill quite some spam and leave the rest to...
Killing Spam
Let's have a look at one of my favorite topics today: E-Mail Spamfilters. They are a quite helpful tool for keeping the inbox clean as long as you don't fully trust their work. I know this sounds paradox, but what hap...
Untrained Spamfilter Blues
I migrated my mailserver a few hours ago to a complete new system to have a better groupware solution and less noise. But honestly, I am already missing the old patchwork system as its spamfilter was working very very...
Let's get active
Today is a wonderful day, the Linux Day in Dornbirn - the place to gather my CAcert points to become an active assurer for the Web of Trust. As it was possible to take the assurer test on site - god bless the inventor...
Now with new Certificates
It shouldn't be a new topic to secure your data while sending it across public lines like the internet. This usually happens using server certificates, which are made once and never touched again - if self signed. In...
Is it me John Wayne, is it you?
Some spammers can really drive you mad - especially if they are doing things like that. Looking at my mailserver logs I have found some strange IP addresses like 123.27.3.81, 222.252.80.188 or 123.16.13.188 which are...
eMail for Info-Junkies
There are many situations in which you might find it important to be up to date with your mailings - especially as soon as they hit your mailbox. This function is available with some mobile phones and commonly sold as...
A new MTA
I guess you all know the common problem with cheap hardware being used as a server box, don't you? I'm fed up with those troubles and decided to use some professional hardware. It doesn't sound that bad running a desk...
The password on archive anjelina
As some spammer guy abuses my domain name again, my mail server got some work to do. Anyways, this time there's a new bastard out there pretending to be a video of Angelina Jolie. For making it through the common malw...
Slower delivery for a destination
Sometimes you have to slow down your mail delivery for some destinations or you might want to push out more mails for a certain server as it's inside your LAN without being unkind to other people. Here's a way of doin...
Mailserver statistics
My mail system is running since quite a while now. So I was checking the statistics, generated from the log files of the last weeks for getting an overview of the current situation. Having 8 mails in my inbox means th...
ORDB.org strikes back
I guess you know the ordb.org blacklisting service for mails - but did you know that it was taken offline long time ago? It did not report spammers since that time, but nevertheless many mailservers are still querying...
A great message
Do you remember Duba? Come on... get your brain cells together and think of the road trip. Yep, it's him, who helped me surviving vienna. Since some time he's trying to work with linux and about to discover the consol...
SQLgrey
I am using Greylisting since quite some time to keep malware away and I have to admit, it is a blessing: As many malware and spam programs do not respect the RFC, they just try to deliver their load just once - so the...
Horde Framework
A long time ago, it must have been last century - I have started setting up a mailserver for me. For being able to access my mail from the office or trade school I used some kind of webmail as someone pointed me to to...
Efficiency of my spamfilter
Is my Spamfilter doing a good job here? Does anybody out there got some values to compare? Here are some recent stats of my mailfilter (SpamAssassin with Bayes, more than 800 messages / day) Efficiency : 99.85% False...
Mail Harvesting Made Easy
It is scary, how simple mail adresses are collected. I think we should have a closer look at how it might be done: Chain letters Chain letters are a wonderful way of collecting as they traveled a while until you get t...
Greylisting to fight spam
As soon as I got a solution against comment spam, the mailserver is flooded with junk. Spamassassin, my mailfilter is working great, but it is a waste of ressources to analyze every bit knocking at my mailserver. What...