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Sendmail
Sendmail is a longstanding open-source mail transfer agent (MTA) for routing and delivering email on Unix-like systems.
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About Sendmail
Sendmail is one of the oldest and most widely deployed mail transfer agents on the internet. It routes email messages between servers, handling delivery and queuing with complex rule-based configuration. Originally written by Eric Allman in the early 1980s, it has powered much of the internet's email infrastructure for decades.
The software uses a control file (sendmail.cf) for its configuration, which can be intricate but offers precise control over mail routing, aliasing, and access control. It supports SMTP, ESMTP, and a range of authentication and encryption mechanisms. Sendmail runs on nearly all Unix and Linux platforms and is maintained by the Sendmail Consortium, with commercial support available through Proofpoint.
This tool suits administrators who need a battle-tested, high-performance MTA with extensive flexibility. It is open source under a custom license. Notable for its historic role in internet email, it remains a key component in many enterprise and ISP mail systems.
The software uses a control file (sendmail.cf) for its configuration, which can be intricate but offers precise control over mail routing, aliasing, and access control. It supports SMTP, ESMTP, and a range of authentication and encryption mechanisms. Sendmail runs on nearly all Unix and Linux platforms and is maintained by the Sendmail Consortium, with commercial support available through Proofpoint.
This tool suits administrators who need a battle-tested, high-performance MTA with extensive flexibility. It is open source under a custom license. Notable for its historic role in internet email, it remains a key component in many enterprise and ISP mail systems.
Email Servers
Quick Facts
- Pricing
- Free
- License
- Open Source
- Platform
- Linux
- Version
- 8.18.1
- Developer
- Proofpoint, Inc. (Sendmail Consortium)
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