email in my website was working very well but it stop working. it shows email sent in my website but it does not reach its destination, i have no knowledge why?
i did join droplet with domain name then i remove domain name and i was using only IP address.
how can i fix this problem?
Are you using your own mail server? You can look at the mail logs. Do you have DKIM and SPF setup on the email domain? If not, that is a problem.
What do you mean that you removed the domain name? Are you sending email that has a "from" address that is using a non-existant domain name, because you removed the domain name?
i am using my mail server
how to do DKIM and SPF setup on the email domain ?
i am using non-existant domain name.
You are using a non-existant domain name? That is a problem.
Other email providers will reject your messages if they come from a non-existant domain name.
Also, you have to actually have a domain name to setup SFP and DKIM on the domain name.
thanks for solution
if i would setup domain name then install postfix . before installing postfix, i have to purge sendmail ?