Outgoing Email Problem :(

[Mehmetturkmen]

Hey people, i have problems with my joomla system on my VPS / WHM Cpanel. My server dont want to send mails to my mail when visitors trys to fill the contact form. Do you know how i can configure or solve the problem...its making me crazy

WHM 11.30.5 (build 3)
CENTOS 5.7 x86_64 virtuozzo


errors on View Mail Statistics

1 - [email protected] R=lookuphost T=remote_smtp: SMTP error from remote mail server after RCPT TO:<[email protected]>: host alperklima.com [188.138.16.96]: 550-Verification failed for <[email protected]>\n550-The mail server could not deliver mail to [email protected]. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.\n550 Sender verify failed

 

[cPanelTristan]

The error message indicates this email account does not exist:

Verification failed for <[email protected]>\n550-The mail server could not deliver mail to [email protected]. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.\n550 Sender verify failed

Does the email account exist?

exim -bt [email protected]