There are many alternatives to Sendmail for Linux if you are looking for a replacement. The best Linux Mail Server alternative is Postfix, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Sendmail and 12 are Mail Servers available for Linux so hopefully you can find a suitable replacement. Other interesting Linux Mail Server alternatives to Sendmail are Zentyal, Zimbra Collaboration Suite, Exim and Courier-MTA.
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, and secure. The software is also known by its former names VMailer and IBM Secure Mailer.
Almost everyone thinks Postfix is a great Sendmail alternative.
Postfix is the most popular Mac & Linux alternative to Sendmail.
Postfix is the most popular Open Source & free alternative to Sendmail.
Integrates native Active Directory and all essential network services, including domain, mail, gateway, infrastructure, and security roles, for SMBs, offering web-based management, centralized authentication, file server, VPN, and firewall in a single Linux platform.
Zentyal is the most popular commercial alternative to Sendmail.
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
Zimbra Collaboration Suite is the most popular Web-based alternative to Sendmail.
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework.
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
BulkMTA is Commercial Mail Server Similar to PowerMTA. IP Rotation, DKIM, Sender / Receiver Rate limiting.
Halon is a global leader in email infrastructure, empowering large senders and mailbox providers to maximize email. Founded in 2010, Halon's solutions process billions of emails daily worldwide.
NikaMail is a portable, extendable, zero-config email server. It is designed to perform automation tasks, provide access to mailboxes (port 110), serve as a mail transfer agent (port 587) and mail exchange service (port 25). NikaMail supports TLS.
EmailSuccess, an advanced SMTP Server (MTA) built from the ground up to handle the most critical reliability, performance, security, and deliverability requirements.
A lightweight mail server with SMTP and POP3 support. It mainly used as store-and-forward mail server with POP access to spooled messages or it can be used as a personal internet mail server.
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