SMTPC(1) smtpc 0.1a.5 SMTPC(1)NAME
smtpc - SMTP / LMTP client
SYNOPSIS
smtpc --esmtp host:port -f envelope@sen.der [ options... ] [ -- ]
recipient@add.ress ...
smtpc --lmtp host:port -f envelope@sen.der [ options... ] [ -- ] recip‐
ient@add.ress ...
smtpc --lmtp path -f envelope@sen.der [ options... ] [ -- ] recipi‐
ent@add.ress ...
DESCRIPTION
smtpc is an email client. It reads a message from standard input and
submits it to email server through socket.
Options
Any options not listed here are silently ignored.
--dump Show dialog in the session.
--esmtp host[:port]
Uses TCP socket and ESMTP protocol to submit message. Either
this option or --lmtp option is required.
If host is the IPv6 address, it must be enclosed in [...] to
avoid confusion with colon separating host and port, e.g.
"[::1]", "[::1]:587". If port is omitted, "25" is used.
-f envelope@sen.der, -fenvelope@sen.der
Specifys envelope sender. This option is required.
To specify "null envelope sender", use a separate empty argument
or "<>".
--iam host.name
Specifys host name or IP address literal used in EHLO or LHLO
request. Default is "localhost".
--lmtp host[:port], --lmtp path
Uses TCP or Unix domain socket and LMTP protocol to submit mes‐
sage. Either this option or --esmtp option is required.
If port is omitted, "24" is used. path must be full path to
socket file.
-N dsn, -Ndsn
Controls delivery status notification. dsn may be single word
"NEVER" or one or more of words "SUCCESS", "FAILURE" and "DELAY"
separated by comma.
If this option is not given, delivery status notification will
be controlled by server.
--smtputf8
Enables support for SMTPUTF8 extension. smtpc detects valid
UTF-8 sequence in envelope and message header, then requests
this extension as neccessity.
-V envid, -Venvid
Specifys envelope ID.
--verbose
Output the last response from the server to standard output.
-- Terminates options. Remainder of command line arguments are
considered to be recipient addresses, even if any of them begin
with "-".
recipent@add.ress ...
Recipients to whom the message would be delivered. At least one
recipient is required.
Exit status
0 Message was successfully submitted.
253 Message was rejected by server.
254 The server returns malformed or illegal response.
255 Network error occurred.
SMTP extensions
smtpc supports following extensions.
8-bit MIME Transport (RFC 6152)
smtpc requests this extension if message contains octets with
high bit.
Delivery Status Notification (RFC 3461)
smtpc issues ORCPT parameters. See also -N and -V options.
Internationalized Email (RFC 6531)
Experimentally supported. See --smtputf8 option.
Message Size Declaration (RFC 1870)
Estimated size of the message is informed to the server.
LIMITATIONS
smtpc provides the feature of SMTP / LMTP client submitting messages to
particular server. It will never provide extensive features such as
message queuing, retry after temporary failure, routing using MX DNS
record and so on. Once the server rejects delivery, smtpc exits and
message is discarded.
KNOWN BUGS
* If NUL octets (\0) are included in messages, they are transmitted to
the server.
SEE ALSOsendmail(1)HISTORY
smtpc was initially written for Sympa project by IKEDA Soji <ikeda@con‐
version.co.jp>.
0.1a.5SMTPC(1)
