Debugging email sending

In case email sending doesn’t work. Start with this little script to verify if your credentials and SMTP server configuration is actually proper.

# Replace with SMTP user login
USER=support@pro6pp.nl
# Replace with SMTP user login (or another email if you user is allowed to impersonate it)
FROM=support@pro6pp.nl
# SMTP password
SMTP_PASS=somepass
# SMTP server hostname
SERVER=sandbox.smtp.mailtrap.io
# The SMTP port
SMTP_PORT=2525
# The e-mail address to send the test email to, replace with your email to actually receive it
DEST_EMAIL=kvdb@kvdb.net

tee mail.txt <<EOF
From: Kees <$FROM>
To: Kees <$DEST_EMAIL>
Subject: Zomaar even
Date: $(date -R)
Message-Id: <$(date +%s).${FROM}>

Hi,
Just an email
EOF

curl --ssl-reqd -vk smtp://$SERVER:$SMTP_PORT/ \
  --mail-from $FROM\
  --mail-rcpt $DEST_EMAIL\
  --upload-file mail.txt\
  --user "$USER:$SMTP_PASS"