http://www.logix.cz/michal/devel/smtp-cli/
smtp-cli github
https://github.com/mludvig/smtp-cli
主管推薦發送mail的軟體，完全符合RFC規定
perl開發的，不用因為需要寄信出去而把自己變成mail server，然後再關閉收件功能
套件會用到epel，要先裝epel
redhat、centos
yum install perl-IO-Socket-SSL perl-Digest-HMAC perl-TermReadKey \ perl-MIME-Lite perl-File-LibMagic perl-IO-Socket-INET6
Usage: smtp-cli [--options]
--server=<hostname>[:<port>] 指定伺服器位置或直接加上port
Host name or IP address of the SMTP server.
May include the port after colon, alternatively
use --port.
--port=<number> Port where the SMTP server is listening.
(default: 25)
-4 or --ipv4 Use standard IP (IPv4) protocol.
-6 or --ipv6 Use IPv6 protocol. For hosts that have
both IPv6 and IPv4 addresses the IPv6
connection is tried first.
--hello-host=<string> String to use in the EHLO/HELO command.
--disable-ehlo Don't use ESMTP EHLO command, only HELO.
--force-ehlo Use EHLO even if server doesn't say ESMTP.
Transport encryption (TLS)
--disable-starttls Don't use encryption even if the remote
host offers it.
--ssl Start in SMTP/SSL mode (aka SSMTP).
Default when --port=465
--disable-ssl Don't start SSMTP even if --port=465
--ssl-ca-file=<filename>
Verify the server's SSL certificate against
a trusted CA root certificate file.
--ssl-ca-path=<dirname> Similar to --ssl-ca-file but will look for
the appropriate root certificate file in
the given directory. The certificates must
must be stored one per file with hash-links
generated by, for example, c_rehash script
from OpenSSL.
Authentication options (AUTH)
--user=<username> Username for SMTP authentication.
--pass=<password> Corresponding password.
--auth-login Enable only AUTH LOGIN method.
--auth-plain Enable only AUTH PLAIN method.
--auth-cram-md5 Enable only AUTH CRAM-MD5 method.
--auth Enable all supported methods. This is
normally not needed, --user enables
everything as well.
Sender / recipient
--from=\"Display Name <add\@re.ss>\"
Sender's name address (or address only).
--to=\"Display Name <add\@re.ss>\"
--cc=\"Display Name <add\@re.ss>\"
--bcc=\"Display Name <add\@re.ss>\"
Message recipients. Each parameter can be
used multiple times.
The --bcc addresses won't apprear in
the composed message.
SMTP Envelope sender / recipient
(rarely needed, use --from, --to, --cc and --bcc instead)
--mail-from=<address> Address to use in MAIL FROM command.
Use --from instead, unless you want
a different address in the envelope and
in the headers.
--rcpt-to=<address> Address to use in RCPT TO command. Can be
used multiple times. Normally not needed,
use --to, --cc and --bcc instead.
If set the --to, --cc and --bcc will only
be used for composing the message body and
not for delivering the messages.
Send a complete RFC822-compliant email message:
--data=<filename> Name of file to send after DATA command.
With \"--data=-\" the script will read
standard input (useful e.g. for pipes).
Alternatively build email a message from provided components:
--subject=<subject> Subject of the message
--body-plain=<text|filename>
--body-html=<text|filename>
Plaintext and/or HTML body of the message
If both are provided the message is sent
as multipart.
--charset=<charset> Character set used for Subject and Body,
for example UTF-8, ISO-8859-2, KOI8-R, etc.
--text-encoding=<encoding>
Enforce Content-Transfer-Encoding for text
parts of the email, including body and
attachments. Must be one of:
".join(", ", @valid_encodings)."
The default is: quoted-printable
--attach=<filename>[\@<MIME/Type>]
Attach a given filename.
MIME-Type of the attachment is guessed
by default guessed but can optionally
be specified after '\@' delimiter.
For instance: --attach mail.log\@text/plain
Parameter can be used multiple times.
--attach-inline=<filename>[\@<MIME/Type>]
Attach a given filename (typically a picture)
as a 'related' part to the above 'body-html'.
Refer to these pictures as <img src='cid:filename'>
in the 'body-html' contents.
See --attach for details about MIME-Type.
Can be used multiple times.
--add-header=\"Header: value\"
--replace-header=\"Header: value\"
--remove-header=\"Header\"
Add, Replace or Remove pretty much any header
in the email. For example to set a different
Mailer use --replace-header=\"X-Mailer: Blah\",
to remove it altogether --remove-header=X-Mailer
or to add a completely custom header use
--add-header=\"X-Something: foo bar\".
--print-only Dump the composed MIME message to standard
output. This is useful mainly for debugging
or in the case you need to run the message
through some filter before sending.
Other options
--verbose[=<number>] Be more verbose, print the SMTP session.
--missing-modules-ok Don't complain about missing optional modules.
--version Print: smtp-cli version $version
--help Guess what is this option for
