Install SpamAssassin from the default Ubuntu software repository. Spamc is the client for SpamAssassin spam filtering daemon. sudo apt install spamassassin spamc The debian-spamd user
how to upgrade to Roundcube 1.5.3 after it’s released. Replace 1.5.3 to the latest version. Find out about the latest Roundcube downloade page. Download
To increase the upload size limit, edit the PHP configuration file. If you using php7.4 then replace 8.1 to 7.4 in the below commands sudo
Roundcube is a free open-source, full-featured webmail client. Roundcube Features Roundcube functionality includes: Address book Folder management Message searching Message filter Spell checking MIME support
DMARC (Domain-based Message Authentication, Reporting and Conformance) is a protocol that is designed to give email domain owners the ability to protect their domain from
Important: make sure to have correct MX, A and PTR records. To check all record are correct use tools like : mxtoolbox.com SPF and DKIM
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