I have configured sendmail using a procedure described in below : Configure Sendmail to Relay Emails through Gmail SMTP.
It works but it takes a loooong time , almost a minute to run and send the mail. Is this something caused by a wrong configuration or any other issue ? Any tip on how to make it faster ? Thank you very much! Any one has experience using zoho mail with digital Ocean ? Thank you!
Some additional info :
Now add following configuration lines into your sendmail.mc configuration file below “MAILER” definition.
define(`SMART_HOST',`[smtp.gmail.com]')dnl define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl define(`ESMTP_MAILER_ARGS', `TCP $h 587')dnl define(`confAUTH_OPTIONS', `A p')dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl FEATURE(`authinfo',`hash -o /etc/mail/authinfo/smtp-auth.db')dnl
In the next step we will need to re-build sendmail’s configuration. To do that execute:
make -C /etc/mail
After completing all the above configuration’s, reload the sendmail service to apply changes.
sudo service sendmail reload
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.