Thank you in advance. I have Linux box running Debian. The mail server is running dovecot and postfix and spamassassin to help with spam. Our users are complaining about getting mail from themselves advertising (i.e. from firstname.lastname@example.org to email@example.com).
The spf record is..
v=spf1 mx mx:mail.domain.org ip4:(IP of the mail server) -all
I need some guidance on how to resolve this issue. Thanks again.