Tag Archives: email

Email Cleanup

Posted on February 19, 2011 by Null

Our email server directories will be cleaned out February 28th.

What this means…

All ham and spam folders will be completely wiped cleaned.
If you have email in either folder on your account, move it to your inbox or create a new folder to store it.

Thanks.
The Administration


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Email Greylisting

Posted on November 27, 2010 by Null

First, for the un-initiated, click here to learn about email greylisting.

When email admins talk about greylisting, one of the benefits they normally point to is load on the actual email server but fail to mention supporting systems. I did notice a decrease in mail processing load there as well as my database server.

Keep in mind this is NOT a busy email server. It’s only hosting a couple TLDs.

I noticed an immediate improvement after restarting mail services (I did not reboot the server).


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Block Incoming IP Using dd-wrt (iptables)

Posted on November 27, 2010 by Null

While reviewing logs on the email server I noticed 112.121.136.26 trying to authenticate via SASL.
This is not a normal IP that would be relaying email through the server, so I decided to block it at the firewall.
Undoubtedly, someone was trying to relay spam, whether they were aware or not.

First, I logged into my firewall via ssh to get a rule in place immediately:

iptables -I CHAIN -s 112.121.136.26 -j DROP

Listing the rules:

iptables -L --line-number

1 DROP 0 -- ppp-112.121.136.26.revip.proen.co.th anywhere

Shows the new rule at the top of the chain. Exactly where I need it.


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MariaDB

Posted on August 25, 2010 by Null

We have upgraded the websites and email servers from MySQL to MariaDB.

Currently researching changes in tuning, if any.


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Kulish Digital Hub

Posted on October 26, 2008 by Null

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