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Full Discussion: Unix mail command internals
Top Forums UNIX for Dummies Questions & Answers Unix mail command internals Post 302555702 by vbe on Thursday 15th of September 2011 10:41:06 AM
Old 09-15-2011
What do you mean by "use an smtp server internally" ?
mail behaviour I believe depends on how it is implemented...
 

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smtp(n) 							    smtp client 							   smtp(n)

NAME
smtp - Client-side tcl implementation of the smtp protocol SYNOPSIS
package require Tcl package require mime ?1.3.2? package require smtp ?1.3.2? ::smtp::sendmessage token option... DESCRIPTION
The smtp library package provides the client side of the smtp protocol. ::smtp::sendmessage token option... This command sends the MIME part (see package mime) represented by token to an SMTP server. options is a list of options and their associated values. The recognized options are: -servers A list of SMTP servers. The default is localhost. -ports A list of SMTP ports. The default is 25. -queue Indicates that the SMTP server should be asked to queue the message for later processing. A boolean value. -atleastone Indicates that the SMTP server must find at least one recipient acceptable for the message to be sent. A boolean value. -originator A string containing an 822-style address specification. If present the header isn't examined for an originator address. -recipients A string containing one or more 822-style address specifications. If present the header isn't examined for recipient addresses). If the string contains more than one address they will be separated by commas. -header A list of keywords and their values (may occur zero or more times). If the -originator option is not present, the originator address is taken from From (or Resent-From); similarly, if the -recipients option is not present, recipient addresses are taken from To, cc, and Bcc (or Resent-To, and so on). Note that the header key/values supplied by the -header option (not those present in the MIME part) are consulted. Regardless, header key/values are added to the outgoing message as necessary to ensure that a valid 822-style message is sent. The command returns a list indicating which recipients were unacceptable to the SMTP server. Each element of the list is another list, con- taining the address, an SMTP error code, and a textual diagnostic. Depending on the -atleastone option and the intended recipients, a non- empty list may still indicate that the message was accepted by the server. SEE ALSO
mime, pop3, ftp, http KEYWORDS
mail, mail, email, smtp, mime, rfc821, rfc822, internet, net mime 1.3.2 smtp(n)
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