Web and FTP Changes

     We upgraded our WordPress to 5.01 today.  Hopefully this will not cause problems.

‘     Our virtual domain system for ftp is changing and it will no longer automatically change to your directory when someone logs in anonymously.  They will need to cd to /home/user to get to your directory.  This is in preparation for changing the ftp server from wu-ftpd which has some compatibility issues with some version of filezilla which is the most widely used ftp client on Windows systems and often Mac and Linux as well, to a newer server.  Unfortunately, wu-ftpd was/is the only ftp daemon that had the capacity to automatically change directories based upon domain or IP address.

     I am also changing the IP address of some of our servers.  Because name service changes take some time to propagate, I will be having the servers listen to both addresses for a period of time until the changes have propagated.  These changes are requiring frequent restarting of the web server so there will be brief (1-5 second) interruptions.  They should not be longer unless I mistype something in the configuration files.

Mail from support

     If you receive e-mail from: support <admin1@mailserver.com

     This mail is NOT from us.  It is a phishing scam attempting to get your authentication so they can take over your account.  Do NOT click on the link.  Delete it.  Any mail that comes from outside domains is not from us.

Mail Abuse – New Fail2ban Rules

     I found people connecting to our mail server, giving the auth command, then disconnecting.  I found out that this was a Chinese botnet attempting to deliver spam but why they would issue an auth command and then not provide arguments is not clear. Perhaps they are aware of some bug in postfix that I am not.

     At any rate it is bad behavior so I have added rules to fail2ban to block IP addresses that do this.  That’s one less botnet delivering spam.

Happy Thanksgiving – and Spam

First I want to wish everyone a Happy Thanksgiving.

I’ve noticed the same explosion of spam here that I am sure you are
all suffering from. I have not been able to find anything wrong here but
there are a couple of viruses going around building botnets these folks
are using.

To try to improve things, I’ve enabled the DCC (Distributed Spam
Checksum Clearinghouse) plugin to spamassassin. Hopefully it will help.
If you notice anything in the headers that is common to a lot of these

New Links

     I’ve added a couple of links to our links pull down on our web site.  One is to something called “Tech Rights” which deal with things like copyrights, patents, and particularly how they affect the open source and technological user community.

     The second link that I have added is to “Open Source“, a website that has many good technical articles including many good tutorials regarding how to utilize Linux and Open Source software.  These will help you make better use of many of the facilities here.