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Login to your server via SSH as ‘root’ user and change to your Sendmail configuration directory, which is normally at /etc/mail.
Please make backup of each configuration file before making changes.
cd /etc/mail
mkdir /SENDMAIL_BACKUP
cp /etc/mail/* /SENDMAIL_BACKUPEdit Sendmail configuration file ‘/etc/mail/sendmail.mc’ using your favorite editor such as ‘vi’ and update the settings as below.
Ports 8025, 587 and 25 can also be used.
If you are getting “Relaying Denied” error messages, enclose the mail server name in square brackets:
define(‘SMART_HOST’, ‘[mail.smtp2go.com]’)dnl
define('SMART_HOST', 'mail.smtp2go.com')dnl
FEATURE('authinfo', 'hash -o /etc/mail/authinfo')dnl
FEATURE('authinfo')dnl
define('RELAY_MAILER_ARGS', 'TCP $h 2525')dnlTo add authorization credentials, edit the file ‘/etc/mail/authinfo’ using your editor and add below line.
Replace ‘your_smtp2go_username’ and ‘your_smtp2go_password’ with your actual SMTP2GO Username and Password.
If your server supports CRAM-MD5 or DIGEST-MD5, then you may replace “M:PLAIN” with “M:CRAM-MD5 DIGEST-MD5”.
AuthInfo:mail.smtp2go.com "U:your_smtp2go_username" "P:your_smtp2go_password"
"M:PLAIN"Now save your changes and update your configuration files as below:
cd /etc/mail
makemap hash /etc/mail/authinfo < /etc/mail/authinfo
make -C /etc/mailFinally restart Sendmail service using one of the following commands based on the version you are using:
/etc/init.d/sendmail restart
or
service sendmail restartTry SMTP2GO free for as long as you like:
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