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Topic: Mail Delivery Agent

Related Topics

Mail transfer agent

Artificial intelligence agent

Mail user agent

Robert Christgau

US Army Air Corps

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Bellevue, Ohio

Richard Ramirez

	Mail transfer agent - Wikipedia, the free encyclopedia
		A mail transfer agent or MTA (also called a mail server, or a mail exchange server in the context of the Domain Name System) is a computer program or software agent that transfers electronic mail messages from one computer to another.
		It receives messages from another MTA (relaying), a mail submission agent (MSA) that itself got the mail from a mail user agent (MUA), or directly from an MUA, thus acting as an MSA itself.
		The delivery of email to a user's mailbox typically takes place via a mail delivery agent (MDA); many MTAs have basic MDA functionality built in, but a dedicated MDA like procmail can provide more sophistication.
	en.wikipedia.org /wiki/Mail_transfer_agent (158 words)

	Maildir++
		As long as the mail delivery agent that puts new messages into a Maildir uses this extension, the quota will be enforced without excessive degradation.
		If a maildir goes over quota, and a mail client that does not support this quota extension removes enough mail from the maildir, the mail delivery agent will not be immediately informed that the maildir is now under quota.
		Messages added to a maildir by a mail user agent that does not understand the quota extension will not be immediately counted towards the overall quota, and may not be counted for an extensive period of time.
	www.inter7.com /courierimap/README.maildirquota.html (2700 words)

	MX Record Explanation
		A Mail Delivery Agent (MDA) is the "postal worker" software that looks at the address and either drops it into the local user's mailbox or tosses it back on the "truck" for delivery elsewhere.
		In other words, the MDA reads the header and decides whether it needs to be put in a mailbox on its own machine or sent back out over the Internet to a remote machine.
		In either case, mail directed to the domain name is redirected to the mail exchange defined in the MX record.
	dnsdb.cit.cornell.edu /explain_mx.html (539 words)

	Mail delivery channels
		The delivery agent may be a type of network communication protocol, such as SMTP or UUCP.
		In addition to its use for delaying delivery of messages (``Badhost (delay)'') in the default configuration, the Badhost channel may be configured to forward messages to a ``smart'' host if the mail address is truly unknown to the local machine.
		The delivery agent may also be selected from a list of known available programs, or you may enter the pathname to a program that you supply.
	docsrv.sco.com /MM_config/scmT.mail_delivery_channels.html (1403 words)

	maildrop (Site not responding. Last check: 2007-09-07)
		is a replacement local mail delivery agent that includes a mail filtering language.
		mail server to integrate mail filtering directly into the process of receiving mail from a remote mail relay, thus rejecting unwanted mail before it is even accepted for local mail delivery.
		Mail servers interpret the EX_TEMPFAIL exit code as a request to reschedule the message for another delivery attempt later.
	www.aircraftsmans.com /maildrop/html/maildrop.html (1389 words)

	[No title] (Site not responding. Last check: 2007-09-07)
		Procmail as an integrated local mail delivery agent --------------------------------------------------- Completely integrating procmail in the mail delivery means that mail is delivered as normal, unless a.procmailrc file is present in the home directory of the recipient.
		The generic way to accomplish this (works with sendmail, smail and any other mail system that uses a local mail delivery program that takes the mail- to-be-delivered on stdin and the recipient(s) on the command line, with or without the "-d" option) is this: Move your current local mail delivery agent (e.g.
		Some braindamaged mail programs do not pick up the MAIL environment variable, these either have to be patched/recompiled or you have to create symbolic links in /var/mail to every person's new mailbox.
	www.ville-basseham.fr /doc/procmail/examples/advanced (1515 words)

	maildrop - mail delivery agent with filtering abilities
		The system administrator can either replace the existing mail delivery agent with maildrop, or a user may run maildrop through the 'forward to program' mechanism of the existing mail delivery agent.
		Delivery mode - this mode is intended to be used when maildrop is used as the default local delivery agent.
		The way it's usually done is by the mail transport agent sending the message using a pipe to the local delivery agent - such as maildrop - and adding some additional headers in the process.
	www.tikismikis.org /maildrop/maildrop.html (2010 words)

	[No title]
		The mail.local program is a delivery agent designed to replace the normal delivery agent on many, but not all, versions of Unix.
		On systems that support it, the mail.local program's chief advantage over your standard local delivery agent is that it can use LMTP for local delivery.
		With LMTP, delivery of a single envelope to multiple recipients is more robust.
	www.gamerz.net /rrognlie/batbook/1565928393_sendmail3-chp-5-sect-3.html (697 words)

	Procmail as Sendmail's Local Delivery Agent
		This document describes how to install procmail as your local delivery agent for sendmail and use it to filter spam and viruses server-wide (i.e., for all mail accounts) without using.forward files.
		Mail that is not destined for delivery on your server (e.g., an entry in your ~/etc/aliases or ~/etc/virtmaps file that bounces the mail to a yahoo.com or hotmail.com account) will not pass through these procmail recipes.
		Filtering all mail (i.e., locally delivered and remotely delivered) is beyond the scope of this document, but may be covered in another tutorial.
	vwh.net /support/vps/basic/admin/email/procmail/docs/filtering.html (1151 words)

	Customising Mail Delivery:
		Although, this is sent in response to personally addressed mail, some could be spam, and you may not necessarily wish everyone to deduce that your home may not be occupied.
		Mail duplication is designed to be used when the user is present and requires all deliveries to be made to their SMS account as well as their EE account.
		For example, 2nd year undergraduates, will have all mail received in their Unix mail box replicated to their SMS account until such time as they decide how to regulate their mail delivery.
	www.see.ed.ac.uk /comp/online/memos/Mail_Box.html?http://oldeee.see.ed.ac.uk/comp/online/memos/Mail_Box.html (1176 words)

	Postfix manual - virtual(8) (Site not responding. Last check: 2007-09-07)
		Originally based on the Postfix local(8) delivery agent, this agent looks up recipients with map lookups of their full recipient address, instead of using hard-coded unix password file lookups of the address local part only.
		The virtual delivery agent daemon prepends a Delivered-To: message header with the final envelope recipient address, prepends an X-Original-To: header with the recipient address as given to Postfix, and prepends a Return-Path: message header with the envelope sender address.
		In all other cases, mail for an existing recipient is deferred and a warning is logged.
	northerntown.org /postfix/virtual.8.html (1226 words)

	Specifications: System Architecture (Site not responding. Last check: 2007-09-07)
		The mail router examines the destination address of a message, and determines whether to connect to the local or SMTP (remote) delivery agents.
		Privileges are required since the mail file must be owned by the user in order for mail to function properly.
		Queueing Agent Occasionally, the SMTP Delivery Agent will be unable to connect to a remote system (usually due to a network problem.) Instead of bouncing back to the sending user, the mail will be stored in a queue, described in the "internal interface" section.
	www.tmok.com /mqp/spec/arch.html (392 words)

	Linux Links - The Linux Portal: Software/Internet/Mail/Delivery_Agents
		Procmail can be used to create mail-servers, mailing lists, sort your incoming mail into separate folders/files (real convenient when subscribing to one or more mailing lists or for prioritising your mail), preprocess your mail, start any programs upon mail arrival (e.g.
		Grandma is an e-mail delivery agent designed to sort e-mail into Maildir-type mailboxes based on e-mail addresses organized in lists.
		Trestlemail is a simple Perl-based MDA (Mail Delivery Agent) that works with Fetchmail to automatically redistribute multi-drop mail.
	www.linuxlinks.com /Software/Internet/Mail/Delivery_Agents/index.shtml (527 words)

	Filtering E-Mail with Postfix and Procmail, Part One
		Once the SMTP server determines that a mail is destined for a local user, it hands off the e-mail to a mail delivery agent to stick it in that user's mailbox.
		It is common to use Procmail as a local delivery agent with Postfix, for example, even though Postfix has a delivery agent built in.
		Although mail filtering is an option for many STMP servers and delivery agents, this series will only focus on two: Postfix and Procmail, respectively.
	www.securityfocus.com /infocus/1593 (2761 words)

	The "deliver" Mail Delivery Agent (Site not responding. Last check: 2007-09-07)
		The program is similar to the procmail program in that it processes incoming mail messages via a pipe from the mail transfer agent (sendmail, exim, etc.), but its use is somewhat the reverse.
		Whereas procmail uses its own internal syntax language to parse the parts of the message and then take actions using more built-in syntax, deliver uses simple built-in variables from within a language of your choice to do whatever you like with it.
		This is a special keyword to deliver which tells it to finish processing and looking for addresses.
	www.panix.com /~kylet/deliver.html (522 words)

	TMDA Filter Specification
		TMDA filter files are used to control mail both coming in to and going out of TMDA.
		Filters with invalid syntax are logged with a specific error message into the debug log and the mail is deferred.
		Here, the envelope sender is set to your subscription address but the From: header is set to a dated address, making it easy for list members to respond to you but greatly reducing the likelihood that spammers will be able to harvest and use the dated address before it expires.
	tmda.net /config-filter.html (1727 words)

	Email Program Classifications
		While the delivery of messages between machines may seem rather straightforward, the entire process of deciding if a particular MTA can or should accept a message for delivery is quite complicated.
		In order for users not running their own MTA to move outbound messages off of their machine and onto a remote machine for delivery, they must use a capacity in the MUA that transfers the message to an MTA they are authorized to use.
		However, some MDAs may be used to sort messages before they are read by a user, which is a big help if you receive a lot of email.
	www.redhat.com /docs/manuals/linux/RHL-8.0-Manual/ref-guide/s1-email-types.html (529 words)

	Mail Delivery Agent - Wikipedia, the free encyclopedia
		A Mail Delivery Agent (MDA) is software that accepts incoming e-mail messages and distributes them to recipients' individual mailboxes (if the destination account is on the local machine), or forwards back to an SMTP server (if the destination is on a remote server).
		A mail delivery agent is not necessarily a mail transfer agent (MTA).
		This page was last modified 14:39, 10 April 2005.
	en.wikipedia.org /wiki/Mail_Delivery_Agent (89 words)

	[Chapter 6] The Mail Hub and Delivery Agents (Site not responding. Last check: 2007-09-07)
		All incoming mail is sent to the hub, meaning that no mail is sent directly to a client machine.
		Rather than having each client send its mail directly to the outside world, all outgoing mail from clients is sent to the hub, and the hub then forwards that mail to its ultimate destination.
		The advantages of the hub approach are that all local delivery is handled by one machine, that no client needs to accept mail for local delivery, and that management is easier with a single spool.
	www.mephis.org /sendmail/ch06_01.htm (748 words)

	Mail/SMTP
		Differing from other mailing list managers, Shibboleth manages lists or groups of lists which are closed, or have membership by invitation only.
		collects statistics on the occurrances of words in mail documents that have been filed/refiled, and uses that to determine a "best guess" of where new mail should best be filed.
		Eudora is sufficiently interoperable that the information may assist in moving data to your preferred mail client...
	cbbrowne.com /info/mail.html (1340 words)

	Stopping Spam and Malware with Open Source (Site not responding. Last check: 2007-09-07)
		The mail server would reject most of the guessed addresses, but the few that were not rejected were recorded as target addresses for spam.
		Web utilities which test a mail server to determine whether it is an open mail relay can be found at the Network Abuse Clearinghouse and at Fabel (a Danish organization whose purpose is to promote the responsible use of e-mail).
		Ideally, filtering on the mail server should be heuristic (that is, it should be able to recognize new as well as existing malware) and should focus on catching malware for which e-mail is an important vector.
	www.brettglass.com /spam/paper.html (12514 words)

	Mail transfer agent - SmartyBrain Encyclopedia and Dictionary
		A mail transfer agent or MTA (also called a mail server, or a mail exchange server in the context of the Domain Name System) is a computer program or software agent which transfers electronic mail messages from one computer to another.
		The MTA works behind the scenes, while the user usually interacts with another program, the mail user agent (MUA), which contacts an MTA for actual delivery of the mail.
		The sendmail program, which implements the standard SMTP mail transfer protocol, has become a very widely used MTA.
	smartybrain.com /index.php/Mail_transfer_agent (220 words)

	[Chapter 6] 6.2 Define a Mail Delivery Agent
		file is a definition of the program (delivery agent) that forwards mail to the hub machine.
		The second line is a configuration command that defines a delivery agent.
		equate is traditionally the last item in a delivery agent definition.
	alex.mackow.free.fr /books/tcpip/sendmail/ch06_02.htm (362 words)

	Perl Mail Delivery Agent
		Sendmail is a Mail Transfer Agent, which is the program that moves mail from one machine to another.
		It masquerades as the email server's local delivery agent and effectively filters spam using a combination of de-obfuscation techniques, specialized algorithms, and statistical analysis.
		Dada Mail is an intuitive, Web-based email list management system, which runs on any hosting account that can execute custom CGI scripts.
	www.stargeek.com /item/144615.html (2166 words)

	LinuxCult Forums - Which Mail Transport Agent ESMTP or SSMTP ? (Site not responding. Last check: 2007-09-07)
		Mail Transport Agent, which can be configured to deliver any messages
		I decided to use Ssmtp on all stations except the mail server.
		I am still evaluating Mail Transport Agents for the mail server.
	www.linuxcult.com /forum/showthread.php?postid=48126 (398 words)

	[Chapter 30] Delivery Agents (Site not responding. Last check: 2007-09-07)
		Instead, it calls other programs (called mail delivery agents) to perform that service.
		mail delivery agent command must begin a line.
		The specific syntax of the mail delivery agent command is
	dan.moneeek.com /content/ref/o-reilly/networking/sendmail/ch30_01.htm (198 words)

	[No title]
		One of the components used to build this e-mail system, Mail delivery agent Procmail, recently released a new version of its software.
		The MTA hands the e-mail off to a local delivery agent (LDA), which is responsible for storing the e-mail until the user retrieves it.
		SquirrelMail uses IMAP to interact with the server, which has another enormous benefit: the mail and folders you see in SquirrelMail are the same as those you see in any other client configured to use IMAP.
	techrepublic.com.com /5102-6313-5034523-2.html (1266 words)

	[cola:02271] maildrop 0.62 - mail filter/mail delivery agent.
		Maildrop uses a sophisticated filtering language which allows very complex mail filtering rules to be defined and used.
		Sample mail filtering recipes as well as complete documentation is provided in both HTML and man page format.
		Keywords: mail, filter, linux, spam, procmail, maildrop Author: mrsam _at_ geocities.com (Sam Varshavchik) Maintained-by: mrsam _at_ geocities.com (Sam Varshavchik) Primary-site: ftp://metalab.unc.edu/pub/Linux/system/mail/mailhandlers 238 Kb maildrop-0.62.tar.gz 241 Kb maildrop-0.62-1.src.rpm 183 Kb maildrop-0.62-1.i386.rpm 2 kb maildrop-0.62.lsm Alternate-site: http://www.flounder.net/~mrsam/maildrop/ Original-site: http://www.geocities.com/SiliconValley/Peaks/5799/maildrop.README.html Copying-policy: GPL End - -- This article has been digitally signed by the moderator, using PGP.
	search.luky.org /cola.1999/msg00110.html (425 words)

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