Hi

I was migrating to iredmail. The server was having a IP xx.xx.xx.54. The new IP changed to xx.xx.xx.68. now all mails are rejected
mailadmin postfix/smtpd[6829]: connect from unknown[122.160.194.137]
ladmin postfix/smtpd[6829]: NOQUEUE: reject: RCPT from unknown[122.160.194.137]: 550 5.1.0 <radware@pipalresearch.com>: Sender address rejected: User unknown in virtual mailbox table; from=<radware@pipalresearch.com> to=<radlog@pipalresearch.com> proto=SMTP helo=<Linkproof-1>

mailadmin postfix/smtpd[6808]: disconnect from me-ss2-dz94bn.mailengine1.com[72.19.211.247]
mailadmin postfix/smtpd[6806]: warning: problem talking to server 127.0.0.1:7777: Success
mailadmin postfix/smtpd[6806]: NOQUEUE: reject: RCPT from mailhost9.lists.techtarget.com[206.19.49.33]: 451 4.3.5 Server configuration problem; from=<790263+2D3-anuj.pandey=pipalresearch.com@lists.techtarget.com> to=<anuj.pandey@pipalresearch.com> proto=ESMTP helo=<chalmers.techtarget.com>

Any help on how to resolve this....?