<p>
        Hi all,</p>
<p>
        I could not start Cyrus IMAP (ver: 2.4.8 on Ubuntu Server) after i compile and config from source. I got a message when i checked /var/log/message:</p>
<p>
        May 19 09:31:37 ldap master[813]: process started<br />
        May 19 09:31:37 ldap master[813]: unable to setsocketopt(IP_TOS): Operation not supported<br />
        <br />
        I compile and config Cyrus IMAP with Cyrus SASL (ver: 2.1.23) and OpenLDAP (ver:2.4.25). The Cyrus SASL and OpenLDAP working OK.</p>
<p>
        My /etc/imapd.conf is:</p>
<p>
        configdirectory: /var/imap<br />
        partition-default: /var/spool/imap<br />
        sievedir: /usr/sieve<br />
        <br />
        admins: khanh<br />
        sasl_pwcheck_method: saslauthd<br />
        allowplaintext: yes<br />
        sasl_mech_list: LOGIN PLAIN<br />
        allowanonymouslogin: no<br />
        autocreatequota: 50000<br />
        quotawarn: 90<br />
        servername: ldap.abc.com<br />
        <br />
        lmtp_overquota_perm_failure: no<br />
        lmtp_downcase_rcpt: yes<br />
        <br />
        tls_cert_file: /var/myCA/server_crt.pem<br />
        tls_key_file: /var/myCA/server_key.pem<br />
        tls_ca_file: /var/myCA/cacert.crt<br />
        tls_ca_path: /var/myCA/<br />
        tls_require_cert: no<br />
        tlscache_db: berkeley<br />
        <br />
        unixhierarchysep: no<br />
        virtdomains: yes<br />
        <br />
        defaultdomain: abc.com<br />
        loginrealms: abc.com<br />
        <br />
        hashimapspool: true<br />
        <br />
        I'm so confusing about this problem. Please help!</p>
<p>
        Best Regards,</p>
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