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ESMTP MTA is a user configurable relay-only MTA with a sendmail-compatible syntax, based on libESMTP and supporting the AUTH (including the CRAM-MD5 and NTLM SASL mechanisms) and the StartTLS SMTP extensions.
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.
Citadel is a collaboration suite (messaging and groupware). It provides support for Email, Calendaring/Scheduling, Address books, Bulletin boards, Mailing List Server, Instant Messaging, Wiki, Multiple domain support.
Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support
amavisd-new is a high-performance interface between mailer (MTA) and content checkers amd virus scanners. It talks to MTA via (E)SMTP or LMTP or by using helper programs. It works best with Postfix, Sendmail and Exim v4, works with sendmail/milter, or with any MTA as a SMTP relay. The content received from the mail server is processed with Spam and Anti virus scanner and based on the results the mails will be quarantined.
GoESMTP is EXPERIMENTAL and is not yet ready for beta testing or for production deployment. Please read the status page for the latest information on stability and functionality. Also please check the current issues. GoESMTP is a multi-node ESMTP server written on Go. Designed from the ground up to work as a cluster, each node keeps an index of the available messages by using hashes which are distributed throughout the cluster. For more information and details on how to build, install and config
RFCMail is a collection of Perl modules which can be used to implement a number of mail-related things, such as SMTP honeypots for spam analysis. Its core business is that of an MTA, so most of the modules relate to SMTP in some way. It does not major in message text handling or message store (mailbox) management. The author has chosen to re-implement the core SMTP functionality, rather than re-use existing implementations, so as to allow much greater flexibility in how SMTP is handled. At this
This is a Plugin for SpamAssassin. This plugin try remove the score of the email generated by our own networks. you do need define two paramenter: tn_find_mx; is the host that received the email tn_networks; are the our networks. If the Ip that send to tn_find_mx is content in a networks defined in tn_networks, then we can use a negative score. For get the tn_find_mx, analice your headers and find the host of your MX. this is an example: Received: from othermx (mx.othermxhost.com 10.10.10.10) by