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1.1 root 1: .\" This file is automatically generated. Do not edit!
2: .TH MH\-MAIL 5 "April 22, 1986" MH [mh.6]
3: .UC 6
4: .SH NAME
5: mh\-mail \- message format for MH message system
6: .SH SYNOPSIS
7: .in +.5i
8: .ti -.5i
9: any \fIMH\fR command
10: .in -.5i
11: .SH DESCRIPTION
12: \fIMH\fR processes messages in a particular format.
13: It should be noted that although neither Bell nor Berkeley mailers produce
14: message files in the format that \fIMH\fR prefers,
15: \fIMH\fR can read message files in that antiquated format.
16:
17: Each user possesses a mail drop box which initially receives
18: all messages processed by \fIpost\fR\0(8).
19: \fIInc\fR\0(1) will read from that drop box and incorporate the new messages
20: found there into the user's own mail folders (typically `+inbox').
21: The mail drop
22: box consists of one or more messages.
23:
24: Messages
25: are expected to consist of lines of text.
26: Graphics and binary data are not handled.
27: No data compression is accepted.
28: All text is clear
29: ASCII 7-bit data.
30:
31: The general \*(lqmemo\*(rq framework of RFC\-822 is used.
32: A message consists of a block of information in a rigid format,
33: followed by general text with no specified format.
34: The rigidly formatted first part of a message is called the header,
35: and the free-format portion is called the body.
36: The header must always exist, but the body is optional.
37: These parts are separated by an empty line,
38: i.e., two consecutive newline characters.
39: Within \fIMH\fR,
40: the header and body may be separated by a line consisting of dashes:
41:
42: .nf
43: .in +.5i
44: .ne 10
45: .eo
46: .so /usr/new/lib/mh/components
47: .ec
48: .in -.5i
49: .fi
50:
51: The header is composed of one or more header items.
52: Each header item can be viewed as a single logical line of ASCII
53: characters.
54: If the text of a header item extends across several
55: real lines, the continuation lines are indicated by leading
56: spaces or tabs.
57:
58: Each header item is called a component and is composed of a
59: keyword or name, along with associated text.
60: The keyword begins at the
61: left margin, may NOT contain spaces or tabs, may not exceed 63
62: characters (as specified by RFC\-822), and is terminated by a colon (`:').
63: Certain
64: components (as identified by their keywords) must follow rigidly
65: defined formats in their text portions.
66:
67: The text for most formatted components
68: (e.g., \*(lqDate:\*(rq and \*(lqMessage\-Id:\*(rq)
69: is produced automatically.
70: The only ones entered by the
71: user are address fields such as \*(lqTo:\*(rq, \*(lqcc:\*(rq, etc.
72: Internet addresses
73: are assigned mailbox names and host computer specifications.
74: The
75: rough format is \*(lqlocal@domain\*(rq, such as \*(lqMH@UCI\*(rq,
76: or \*(lqMH@UCI\-ICSA.ARPA\*(rq.
77: Multiple addresses are separated by commas.
78: A missing host/domain is assumed to be the local host/domain.
79:
80: As mentioned above,
81: a blank line (or a line of dashes)
82: signals that all following text up to the end of the file is the body.
83: No formatting is expected or enforced within the body.
84:
85: Following is a list of header components that are considered
86: meaningful to various MH programs.
87: .in +.5i
88: .ti -.5i
89: Date:
90: .br
91: Added by \fIpost\fR\0(8),
92: contains date and time of the message's entry into the transport system.
93:
94: .ti -.5i
95: From:
96: .br
97: Added by \fIpost\fR\0(8),
98: contains the address of the author or authors (may be more than one if a
99: \*(lqSender:\*(rq field is present).
100: Replies are typically directed to addresses in the \*(lqReply\-To:\*(rq or
101: \*(lqFrom:\*(rq field (the former has precedence if present).
102:
103: .ti -.5i
104: Sender:
105: .br
106: Added by \fIpost\fR\0(8)
107: in the event that the message already has a \*(lqFrom:\*(rq line.
108: This line contains the address of the actual sender.
109: Replies are never sent to addresses in the \*(lqSender:\*(rq field.
110:
111: .ti -.5i
112: To:
113: .br
114: Contains addresses of primary recipients.
115:
116: .ti -.5i
117: cc:
118: .br
119: Contains addresses of secondary recipients.
120:
121: .ti -.5i
122: Bcc:
123: .br
124: Still more recipients.
125: However, the \*(lqBcc:\*(rq line is not copied onto the message as delivered,
126: so these recipients are not listed.
127: \fIMH\fR uses an encapsulation method for blind copies, see \fIsend\fR\0(1).
128:
129: .ti -.5i
130: Fcc:
131: .br
132: Causes \fIpost\fR\0(8) to copy the message into the specified folder for the
133: sender,
134: if the message was successfully given to the transport system.
135:
136: .ti -.5i
137: Message\-ID:
138: .br
139: A unique message identifier added by \fIpost\fR\0(8) if the `\-msgid' flag
140: is set.
141:
142: .ti -.5i
143: Subject:
144: .br
145: Sender's commentary. It is displayed by \fIscan\fR\0(1).
146:
147: .ti -.5i
148: In\-Reply\-To:
149: .br
150: A commentary line added by \fIrepl\fR\0(1) when replying to a message.
151:
152: .ti -.5i
153: Resent\-Date:
154: .br
155: Added when redistributing a message by \fIpost\fR\0(8).
156:
157: .ti -.5i
158: Resent\-From:
159: .br
160: Added when redistributing a message by \fIpost\fR\0(8).
161:
162: .ti -.5i
163: Resent\-To:
164: .br
165: New recipients for a message resent by \fIdist\fR\0(1).
166:
167: .ti -.5i
168: Resent\-cc:
169: .br
170: Still more recipients.
171: See \*(lqcc:\*(rq and \*(lqResent\-To:\*(rq.
172:
173: .ti -.5i
174: Resent\-Bcc:
175: .br
176: Even more recipients.
177: See \*(lqBcc:\*(rq and \*(lqResent\-To:\*(rq.
178:
179: .ti -.5i
180: Resent\-Fcc:
181: .br
182: Copy resent message into a folder.
183: See \*(lqFcc:\*(rq and \*(lqResent\-To:\*(rq.
184:
185: .ti -.5i
186: Resent\-Message\-Id:
187: .br
188: A unique identifier glued on by \fIpost\fR\0(8) if the `\-msgid' flag
189: is set.
190: See \*(lqMessage\-Id:\*(rq and \*(lqResent\-To:\*(rq.
191:
192: .ti -.5i
193: Resent:
194: .br
195: Annotation for \fIdist\fR\0(1) under the `\-annotate' option.
196:
197: .ti -.5i
198: Forwarded:
199: .br
200: Annotation for \fIforw\fR\0(1) under the `\-annotate' option.
201:
202: .ti -.5i
203: Replied:
204: .br
205: Annotation for \fIrepl\fR\0(1) under the `\-annotate' option.
206: .in -.5i
207: .sp
208: .Fi
209: ^/usr/spool/mail/$USER~^Location of mail drop
210: .Pr
211: None
212: .Sa
213: \fIStandard for the Format of ARPA Internet Text Messages\fR (aka RFC\-822)
214: .De
215: None
216: .Co
217: None
218: .En
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