Nothing happens when sending a mail with (command line) sendmail

Question

I want to set a mail server that can send mail with sendmail. Here is what I have done exactly

 service postfix start
 sendmail < mymail

where mymail contains

to:my@mail.com
from:random@mail.com
subject: None
None

With a packet capture, I see that nothing is sent. postfix is running on port 25 and I haven't touch the configuration after postfix installation.

Why is the mail not sent and how can I send a mail with sendmail?

sendmail user@example.com < /tmp/email.txt (email.txt =
subject
text) (replace
with empty line feed) — yagmoth555, Dec 22 '16 at 17:15
Thanks for the answer. I obviously forget my mail when writting the command. With `sendemail`, I get the error: `ERROR => TLS setup failed: SSL connect attempt failed error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed` — j1088099.mvrht.com., Dec 22 '16 at 17:29

score 4 · Answer 1 · answered Dec 22 '16 at 22:18

1) Instruct sendmail to look for recipients in message headers (-t) and ignore single dot line as end of email (-i). Without -t sendmail expects to get recipients' list via command line.

sendmail -i -t < mymail

2) Insert empty line between headers and body in the message (mymail file)

to:my@mail.com
from:random@mail.com
subject: None

None

Postfix manual sendmail(1)

Nothing happens when sending a mail with (command line) sendmail

1 Answers1