I am having trouble getting mail working correctly on my system. Here is the error I keep getting: ----- The following addresses had permanent fatal errors ----- (reason: system config error) ----- Transcript of session follows ----- 553 5.3.5 sandust.org. config error: mail loops back to me (MX problem?) 554 5.3.5 ... Local configuration error -------------------------------------------------- If I send mail to dusty@manapua.sandust.org, it works. If I send mail to dusty@manapua.dyndns.org, it works. If I send mail to dusty@sandust.org It get error. 1. manapua.sandust.org points to manapau.dyndns.org in DNS. 2. sandust.org and *.sandust.org point to my IP in DNS (cant't get sandust.org to point to another hostname). 3. I have tried creating an MX record for sandust.org that points to manapua.sandust.org 4. I have tried creating an MX record for sandust.org that points to manapua.dyndns.org 5. Right now I have no MX record for sandust.org 6. I have MX turned on with DYNDNS.ORG 7. The external hostname of my system is manapua.dyndns.org 8. The internal hostname of my system is manapua.sandust.org