Q:

Why does the Postfix proxymap process keeps failing?

I recently took the dark path to managing my own VPS with shell access (CentOS 5). I installed the LAMP stack, FTP etc. then setting up mail server I used postfix, dovecot and squirrel mail as client. After going through different tutorials online, I've succeeded in failing. This is a sample of the mail log:
Jul 20 01:18:16 www postfix/smtpd[1287]: warning: private/proxymap socket: service dict_proxy_open: Connection reset by peer
Jul 20 01:18:16 www postfix/master[1125]: warning: process /usr/libexec/postfix/proxymap pid 7431 exit status 1
Jul 20 01:18:16 www postfix/master[1125]: warning: /usr/libexec/postfix/proxymap: bad command startup -- throttling
Jul 20 01:19:16 www postfix/proxymap[7449]: fatal: unsupported dictionary type: mysql
Jul 20 01:19:17 www postfix/cleanup[1141]: warning: premature end-of-input on private/proxymap socket while reading input attribute name
Jul 20 01:19:17 www postfix/cleanup[1141]: warning: private/proxymap socket: service dict_proxy_open: Success
Jul 20 01:19:17 www postfix/smtpd[1287]: warning: premature end-of-input on private/proxymap socket while reading input attribute name
Jul 20 01:19:17 www postfix/smtpd[1287]: warning: private/proxymap socket: service dict_proxy_open: Connection reset by peer
Jul 20 01:19:17 www postfix/master[1125]: warning: process /usr/libexec/postfix/proxymap pid 7449 exit status 1
Jul 20 01:19:17 www postfix/master[1125]: warning: /usr/libexec/postfix/proxymap: bad command startup -- throttling

I cant get mail to be sent out or received. please help, I'm willing to paste any info as required.

A:

According to this error message fatal: unsupported dictionary type: mysql, your postfix compiled without MySQL support. See Postfix MySQL Howto.

