How To Install cyrus-imapd on CentOS 7
Introduction
In this tutorial we learn how to install cyrus-imapd on CentOS 7.
What is cyrus-imapd
The cyrus-imapd package contains the core of the Cyrus IMAP server. It is a scaleable enterprise mail system designed for use from small to large enterprise environments using standards-based internet mail technologies. A full Cyrus IMAP implementation allows a seamless mail and bulletin board environment to be set up across multiple servers. It differs from other IMAP server implementations in that it is run on “sealed” servers, where users are not normally permitted to log in and have no system account on the server. The mailbox database is stored in parts of the file system that are private to the Cyrus IMAP server. All user access to mail is through software using the IMAP, POP3 or KPOP protocols. It also includes support for virtual domains, NNTP, mailbox annotations, and much more. The private mailbox database design gives the server large advantages in efficiency, scalability and administratability. Multiple concurrent read/write connections to the same mailbox are permitted. The server supports access control lists on mailboxes and storage quotas on mailbox hierarchies. The Cyrus IMAP server supports the IMAP4rev1 protocol described in RFC 3501. IMAP4rev1 has been approved as a proposed standard. It supports any authentication mechanism available from the SASL library, imaps/pop3s/nntps (IMAP/POP3/NNTP encrypted using SSL and TLSv1) can be used for security. The server supports single instance store where possible when an email message is addressed to multiple recipients, SIEVE provides server side email filtering.
We can use yum or dnf to install cyrus-imapd on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install cyrus-imapd.
Install cyrus-imapd on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install cyrus-imapd using yum by running the following command:
sudo yum -y install cyrus-imapd
Install cyrus-imapd on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install cyrus-imapd using dnf by running the following command:
sudo dnf -y install cyrus-imapd
How To Uninstall cyrus-imapd on CentOS 7
To uninstall only the cyrus-imapd package we can use the following command:
sudo dnf remove cyrus-imapd
References
Summary
In this tutorial we learn how to install cyrus-imapd on CentOS 7 using yum and dnf.
