You don't need the proxy running for a single server install, disable it and run the following command (yes, it's all on one line

) as the Zimbra user:
Code:
zmprov -l ms server.domain.com zimbraPop3BindPort 110 zimbraPop3SSLBindPort 995 zimbraPop3ProxyBindPort 7110 zimbraPop3SSLProxyBindPort 7995 zimbraImapBindPort 143 zimbraImapSSLBindPort 993 zimbraImapProxyBindPort 7143 zimbraImapSSLProxyBindPort 7993
restart Zimbra and see if that resolves your problem.