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bobobobo
Asked: 2014-01-15 15:14:39 +0800 CST

exim on Amazon AMI via yum

  • 772

I'm having trouble figuring out yum, rpm, and exim4.

All I want to do is 

yum install exim4

yum has been good to me in the past, smoothly fetching all packages and dependencies required to run the program I desire.

But not this time. exim4 wasn't included in the amzn-main package apparently.

amzn-main/latest
amzn-updates/latest
No package exim4 available.

Now I don't want any fish. I want to learn how to use the dadgam yum fishing rod.

  • I don't know where to get the command to install exim4 via yum.
  • I don't know how to expand the places my Linux instance is looking (besides just amzn-main) to actually find the exim4 yum package
    • I don't know whether it is safe to look in other places for packages for my ec2 instance other than amzn-main
amazon-ec2

4 Answers

  1. Best Answer

    Amazon Linux doesn't include exim in its packages at all. Use a different MTA.

    • 2

  2. If you enable the repository EPEL, then you can install exim via yum. Here's are Amazon's instructions:

    Modify /etc/yum.repos.d/epel.repo. Under the section marked [epel], change enabled=0 to enabled=1.

    To temporarily enable the EPEL 6 repository, use the yum command line option --enablerepo=epel.

    Please note that the Amazon Linux AMI repositories are configured with a higher priority than any third-party repositories. The reason for this is because there are several packages that are part of the Amazon Linux AMI that are also in third-party repositories, and we want to make sure that the Amazon Linux AMI version is installed in the default case.

    Enabling EPEL is relatively safe, since according to the FAQ "EPEL is purely a complementary add-on repository and does not replace packages in RHEL or layered products."

    • 2

  3. These days exim is included, so no need for third party repos. You can simply yum install exim.

    • 2

  4. enable this:

    sudo yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

    https://aws.amazon.com/premiumsupport/knowledge-center/ec2-enable-epel/

    Once that is installed, you don't need --enablerepo=epel on each yum command. It's enabled for good.

    $ yum list available | grep exim

    This shows that you are installing exim 4.90 (latest is 4.91, I don't see that available.)

    finally:

    $ sudo yum install exim

    That's it. ......

    • -1