exim, email, and dns
I am trying to set up my own email server. I had problems with sendmail so I switched to exim. I have exim up and running correctly (I think) but I think now I have dns issues. I have a real domain that i'm trying to set up, but when I send email to some accounts they bounce back with a 550 error, but others are fine and accept the email. I figure this is some spam blocking thing and that my dns must be messed up and that I look like a possible spam server.
Here is the error i get back form to different emails that i sent.
SMTP error from remote mailer after RCPT TO:<email@example.com>: host rchelicam.com [220.127.116.11]: 550-Verification failed for <firstname.lastname@example.org> 550-unrouteable mail domain "dryrain.net" 550 Sender verify failed
and the other is
SMTP error from remote mailer after MAIL FROM:<email@example.com>: host mail.redirection.net [18.104.22.168]: 550 5.0.0 Use your ISP's SMTP server
Does anyone have an thoughts about how to fix my problem.