Why e-mail sending is not working after postfix re-installation?

Solution Verified - Updated -

Issue

  • After re-installation or updation of postfix packages email sending is not working with below error messages.
postfix/cleanup[15156]: fatal: open database /etc/postfix/recipient_canonical.db: Invalid argument
postfix/master[15151]: warning: process /usr/libexec/postfix/cleanup pid 15156 exit status 1
postfix/master[15151]: warning: /usr/libexec/postfix/cleanup: bad command startup -- throttling

Environment

  • Red Hat Enterprise Linux 5.6

  • postfix-2.3.3-7.el5

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