SMTP error from remote mail server after RCPT TO:<[email protected] >: host a24uall.info  [ IP ]: 550-Verification failed for <[email protected]> 550-No Such User Here 550 Sender verify failed

Solution :

Login to remote server ( destinationdomain.com  )and bypass the Ip for smtp sender verification check.

WHM >> Main >> Service Configuration >> Exim Configuration Editor >>

Edit ” Whitelist: Bypass SMTP time sender verifcation check ”  and add the Ip address of  “senderdomain.com”.

This should fix.

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