3 qmail-remote \- send mail via SMTP
14 reads a mail message from its input
16 to one or more recipients
26 or to a mail exchanger for
28 listed in the Domain Name System,
29 via the Simple Mail Transfer Protocol (SMTP).
31 can be either a fully-qualified domain name:
34 silverton.berkeley.edu
37 or an IP address enclosed in brackets:
43 The envelope recipient addresses are listed as
47 The envelope sender address is listed as
53 and does not follow the
57 End-of-file in SMTP is encoded as dot CR LF.
58 A dot at the beginning of a line is encoded as dot dot.
59 It is impossible in SMTP to send a message that does not end with a newline.
61 converts the UNIX newline convention into the SMTP newline convention
62 by inserting CR before each LF.
64 It is a violation of the SMTP protocol
65 to send a message that contains long lines or non-ASCII characters.
68 will happily send such messages.
69 It is the user's responsibility to avoid generating illegal messages.
73 .I recipient reports\fP,
76 Each report is terminated by a 0 byte.
77 Each report begins with a single letter:
80 Recipient report: acceptance.
83 Recipient report: permanent rejection.
86 Recipient report: temporary rejection.
89 Message report: success.
91 has taken responsibility for delivering the message to each
95 Message report: temporary failure.
98 Message report: permanent failure.
100 After this letter comes a human-readable description of
103 The recipient reports will always be printed in the same order as
107 Note that in failure cases there may be fewer
119 for use solely in saying hello to the remote SMTP server.
128 Artificial SMTP routes.
129 Each route has the form
130 .IR domain\fB:\fIrelay ,
131 without any extra spaces.
144 (It will also avoid doing any CNAME lookups on
149 may include a colon and a port number to use instead of the
150 normal SMTP port, 25:
153 inside.af.mil:firewall.af.mil:26
160 to look up MX records as usual.
162 may include wildcards:
170 any address ending with
175 is routed by its MX records;
176 any other address is artificially routed to
181 system does not protect you if you create an artificial
182 mail loop between machines.
184 you are always safe using
186 if you do not accept mail from the network.
191 will wait for the remote SMTP server to accept a connection.
193 The kernel normally imposes a 75-second upper limit.
198 will wait for each response from the remote SMTP server.