How To Install avenger.deliver on CentOS 8

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install mailavenger

sudo dnf makecache && sudo dnf -y install mailavenger

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is avenger.deliver and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install avenger.deliver on CentOS 8. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install avenger.deliver on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install avenger.deliver using dnf by running the following command:

sudo dnf -y install mailavenger

Install avenger.deliver on CentOS 8 using yum

Because avenger.deliver is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install avenger.deliver package on your server/computer by running the following command:

sudo yum -y install mailavenger

How to upgrade (update) a single package avenger.deliver using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like avenger.deliver in this example you should use the following command:

yum update mailavenger

To downgrade a package to an earlier version:

yum downgrade mailavenger

How to Upgrade avenger.deliver on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update mailavenger

How To remove avenger.deliver from CentOS 8

To uninstall only the avenger.deliver package you can execute the following command:

sudo dnf remove mailavenger

Extra info and code examples

Mail Avenger is a highly configurable, MTA-independent Spam filtering solution at SMTP'ing time. The criteria Mail Avenger uses to handle filtering is based on a "how is it being send?" fashion, instead of the classical "what are you sending?" model, in which the body or mail itself is analysed looking for SPAM patterns, keywords, bad words or applying Bayesian filters, like SpamAssassin, DSPAM or SpamBayes does. A distinguishing feature of Mail Avenger is that it allows you to reject spam during SMTP time, before even spooling messages in your local mail queue. This carries interesting features like identifying most clients OS (using TCP SYN fingerprints), acquiring client's network information, embed cryptographically secure expiration times in temporary mail addresses to validate mail before receiving the message body, between others. This is a partial list of features: * Mail-bomb protection * TCP filtering * Network-level traffic analysis * SMTP-level traffic analysis * SMTP callbacks * Per-user and per-user-extension mail scripts * Per-user mail relay checks * Virtual domain mapping * Alias to user mapping * RBL support * SPF * SPF language queries * Asynchronous DNS queries * "Bodytest" support * SMTP STARTTLS support

Conclusion

You now have a full guide on how to install avenger.deliver using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the avenger.deliver from CentOS 8.

See also: