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This is a list of Simple Mail Transfer Protocol (SMTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. Unless otherwise stated, all status codes described here is part of the current SMTP standard, RFC 5321. The message phrases shown are typical, but any human-readable alternative ...
Windows NT 3.1 Advanced Server was released on July 27, 1993 [citation needed] as an edition of Windows NT 3.1, an operating system aimed towards business and server use. As with its Workstation counterpart, Windows NT 3.1 Advanced Server was a 32 bit rewrite of the Windows kernel that retained a similar use interface to Windows 3.1.
A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database. The most common types of records stored in the DNS database are for start of authority ( SOA ), IP addresses ( A and AAAA ), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS ...
Zimbra Collaboration, formerly known as the Zimbra Collaboration Suite ( ZCS) before 2019, is a collaborative software suite that includes an email server and a web client. Zimbra was initially developed by LiquidSys, which changed their name to Zimbra, Inc. on 26 July 2005. [2] The Zimbra Collaboration Suite was first released in 2005.
Proton Mail (previously written as ProtonMail) is a Swiss end-to-end encrypted email service founded in 2013 headquartered in Plan-les-Ouates, Switzerland. It uses client-side encryption to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as Gmail and Outlook.com.
SIPRNet. The Secret Internet Protocol Router Network ( SIPRNet) is "a system of interconnected computer networks used by the U.S. Department of Defense and the U.S. Department of State to transmit classified information (up to and including information classified SECRET) by packet switching over the 'completely secure' environment". [1]
History of email. The history of email entails an evolving set of technologies and standards that culminated in the email systems in use today. [1] Computer-based messaging between users of the same system became possible following the advent of time-sharing in the early 1960s, with a notable implementation by MIT 's CTSS project in 1965.
iCloud. iCloud is a cloud service developed by Apple Inc. Launched on October 12, 2011, iCloud enables users to store and sync data across devices, including Apple Mail, Apple Calendar, Apple Photos, Apple Notes, contacts, settings, backups, and files, to collaborate with other users, and track assets through Find My. [1]