An Update on DKIM Signing and SE Linux PolicyAn Update on DKIM Signing and SE Linux Policy
In my previous post about DKIM [1] I forgot to mention one critical item, how to get Postfix to actually talk to the DKIM milter. This wasn’t a bad thing[...]
Category: Mta
Installing DKIM and Postfix in DebianInstalling DKIM and Postfix in Debian
I have just installed Domain Key Identified Mail (DKIM) [1] on my mail server. In summary the purpose is to allow public-key signing of all mail that goes out from[...]
SpamAssassin During SMTPSpamAssassin During SMTP
For some time people have been telling me about the benefits of SpamAssassin (SA). I have installed it once for a client (at their demand and against my recommendation) but[...]
Moving a Mail ServerMoving a Mail Server
Nowadays it seems that most serious mail servers (IE mail servers suitable for running an ISP) use one file per message. In the old days (before about 1996) almost all[...]
Conditions of Sending EmailConditions of Sending Email
Update: Due to the popularity of this post I have created a T-Shirt and put it on sale at http://www.cafepress.com/email_eula . Update: Unlike most of my blog content I permit[...]
A New Spam TrickA New Spam Trick
One item on my todo list is to set up a bunch of email addresses on sub-domains of domains that I am responsible for (with the consent of all people[...]
new release of postalnew release of postal
Today I have released a significant new version of my mail server benchmark Postal! The list of changes is below: Added new program bhm to listen on port 25 and[...]
email disclaimersemail disclaimers
Andre Pang blogs about the annoyance of email disclaimers. For a while I had a .sig indicating that it was a condition of sending email to me that the sender[...]
more about MX recordsmore about MX records
In response to my previous post someone pointed out that MX records have an obvious benefit of offering multiple servers at different priority levels. I don’t believe that this is[...]
MX vs A recordMX vs A record
One issue that has been the topic of some pointless discussion is whether a mail server should have an A record or an MX record. Mail can be delivered to[...]