I've installed exim4 on my server to send email for server messages, registration messages, lost password messages etc.
My server's FQDN/rDNS is mail.example.com, which I also entered during the configuration of exim4 (
Emails are now sent from addresses like email@example.com. How can I change this to just firstname.lastname@example.org?
I'm afraid that if I just enter example.com during exim4's configuration my emails will be marked as spam.
I do have a SPF record.