[Mailman-Users] mails send from sendmail with commandline to mailman become 'Message has implicit destination'

MichaelLeung gbcbooksmj at gmail.com
Sat Dec 26 22:58:44 EST 2015

i did not know the different between mail and sendmail

i actually use mail , not sendmail, sorry

for example

echo "please dont reply this email" | mail -v -s 'this is a test mail' 
-r mailman at maillist.com mailman at maillist.com

On 12/27/2015 11:52 AM, Mark Sapiro wrote:
>> my issue is when i send a email by using sendmail commandline to mailist
>> , maillist services can not read this message correctly , the message
>> will become a "Message has implicit destination" warning , but it did
>> have a subject and i pretty sure that i have a subject and i did not use
>> cc or bcc .
> The message file that you sent did not contain a To: header with the
> list address.
> The sendmail command, unlike the mail command, does not add headers to
> the input and your message must have a To: header with the list address
> in order to not be flagged for implicit destination.
> In other words if you are sending the message with some command like
> sendmail -r you at example.com list at example.com < input_file
> the file input_file must contain things like
> --------------------------------------------------
> To: list at example.com
> From: you at example.com
> Subject: The message subject
> The body
> of the message
> --------------------------------------------------
> The sending MTA will probably add headers like Message-ID: and Date:,
> but it won't add To: which is your issue.
> If you want to use a command line command that will add header like To:
> and Subject: use the mail command, not the sendmail command.

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