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I have setup a Email server with Postfix, Dovecot and MariaDB on CentOS 7, but got errors in the maillog, whats reason and how to fix?

errors messages:

May 14 01:51:27 localhost postfix/master[1798]: warning: /usr/libexec/postfix/proxymap: bad command startup -- throttling
May 14 01:51:27 localhost postfix/submission/smtpd[26968]: warning: private/proxymap socket: service dict_proxy_open: Success
May 14 01:51:27 localhost postfix/master[1798]: warning: process /usr/libexec/postfix/proxymap pid 13088 exit status 1
May 14 01:52:27 localhost postfix/proxymap[13126]: fatal: /etc/postfix/mysql-virtual_mailboxes.cf: bad string length 0 < 1: table =
May 14 01:52:27 localhost postfix/proxymap[13127]: fatal: /etc/postfix/mysql-virtual_mailboxes.cf: bad string length 0 < 1: table =
  • what does it means for this sql? --> SELECT CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/') FROM users WHERE email='%s' – lewis.tao May 14 '18 at 16:16
  • fatal: /etc/postfix/mysql-virtual_mailboxes.cf: bad string length 0 < 1: table : Empty file ? – Dom May 14 '18 at 16:18
  • @lewis.tao you can use postmap to test your config – c4f4t0r May 14 '18 at 16:26
  • Post full content of the /etc/postfix/mysql-virtual_mailboxes.cf BUT be sure to change the password and username (so we don't see them) – ivanivan May 14 '18 at 16:30
  • it first time to post here, i even can't post code with <line break> – lewis.tao May 14 '18 at 17:34

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