Qpsmtpd
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High Quality Content by WIKIPEDIA articles! qpsmtpd is an SMTP daemon written in Perl. It was originally designed to be a drop-in replacement for qmail-smtpd, the SMTP component of qmail, and it is now also compatible with Postfix, Exim, sendmail and virtually any software that "speaks SMTP". With its flexible plugin system it's easy to make it interoperate with other pieces in a mail system. Its main purpose is to allow mail administrators to perform more advanced spam filtering than is possible with other SMTP daemons. As one example of dozens, the check_earlytalker module blocks many…mehr

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High Quality Content by WIKIPEDIA articles! qpsmtpd is an SMTP daemon written in Perl. It was originally designed to be a drop-in replacement for qmail-smtpd, the SMTP component of qmail, and it is now also compatible with Postfix, Exim, sendmail and virtually any software that "speaks SMTP". With its flexible plugin system it's easy to make it interoperate with other pieces in a mail system. Its main purpose is to allow mail administrators to perform more advanced spam filtering than is possible with other SMTP daemons. As one example of dozens, the check_earlytalker module blocks many viruses and mass mailers based on their characteristic violation of basic protocol, even before they start sending actual mail data. The program's main author is Ask Bjørn Hansen. It is licensed under the MIT License. In Unix and other computer multitasking operating systems, a daemon (pronounced / de m n/ or / di m n/) is a computer program that runs in the background, rather than under the direct control of a user; they are usually initiated as background processes.