While SMTP is a little tricky because of the different mailbox formats and risk of spammers hijacking the service, POP really truly is an incredibly simple protocol. Sysadmin-based reviews of smail, exim, sendmail, qmail, postfix, MMDF, zmailer. Very nice tabular comparison of Sendmail, qmail, postfix, exim, and Courier. The commercial version of Sendmail incorporates anti-spam.
SURGEMAIL WIKIPEDIA CODE
ISPs use a much higher percentage of Unix-based, public-domain code than businesses do.
However, it is both old and limited to the *.net domain - which is mostly ISPs. There is a survey of SMTP servers available. It was followed by postfix, also designed to be more secure.Īnd SMTP server also comes with most of the IMAP offerings. Qmail, an open source program, was specifically designed to be more secure. (Not surprising, since it was designed at a time when Internet users didn't have to worry so much about vandals, theives, perverts, and jerks.) The Sendmail author developed a commercial version that is more heavyweight, but it faces stiff competition. However, there have been a number of well-publicized security breaches of sendmail.
Sendmail for years was almost synonymous with SMTP. anti-spam) or as a freebie to make their package look beefier. Most POP and SMTP products - and essentially all commercial POP and SMTP products - deliver POP and SMTP as a side effect of their value proposition (e.g. This is a temporary page for notes on the ecosystem of third-party servers for the protocols that Chandler will need to support.īecause the email specs are open, and because the POP and SMTP protocols are so simple, there are a huge number of POP and SMTP products. Third Party Server Ecosystem UNDER SERIOUS CONSTRUCTION
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