Linux temps réel embarqué et outils de développements Technique


smtp-refuser Simple spam-block with refusal message
Installed size 108
Maintainer David Coe <davidc@debian.org>
Architecture i386
Depends libc6 (>= 2.3.6-6)
Suggests tcpd, mail-transport-agent
File name pool/main/s/smtp-refuser/smtp-refuser_1.
Description Smtp-refuser can be configured to reject mail from specific hosts (or that satisfy other tcpd hosts.allow or similar rules), returning a meaningful message including the reason it was bounced and a local phone number. Because spam often has a bad envelope-from, (and because this is more efficient), we bounce it with an error message during the SMTP transaction, rather than send bounce mail later. . This SMTP refuser is used along with "tcpd" or (another TCP security daemon) to bounce messages from the IP addresses of known spammers. The advantage of this over just blocking the connection is that the remote SMTP server will not retry, and a legitimate e-mail sender will get a polite message telling them why their mail was blocked and whom to call to get around the blocking. . Mail that is not blocked by smtp-refuser is delivered to your standard mail transport agent. . Other, more automated solutions such as RBL and ORBS (supported by most of the mail transfer agents), have become available since smtp-refuser was written, but this may still be of interest to you.

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