Hi, i am currently running zimbra on Release 7.1.4_GA_2555.UBUNTU10_64 UBUNTU10_64 FOSS edition. My question is, what should i prepare before the certificate goes expire ?

::service mta::
notBefore=Aug 13 04:27:42 2012 GMT
notAfter=Aug 13 04:27:42 2013 GMT
subject= /C=US/ST=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
issuer= /C=US/ST=N/A/L=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
SubjectAltName=
::service proxy::
notBefore=Aug 13 04:27:42 2012 GMT
notAfter=Aug 13 04:27:42 2013 GMT
subject= /C=US/ST=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
issuer= /C=US/ST=N/A/L=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
SubjectAltName=
::service mailboxd::
notBefore=Aug 13 04:27:42 2012 GMT
notAfter=Aug 13 04:27:42 2013 GMT
subject= /C=US/ST=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
issuer= /C=US/ST=N/A/L=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
SubjectAltName=
::service ldap::
notBefore=Aug 13 04:27:42 2012 GMT
notAfter=Aug 13 04:27:42 2013 GMT
subject= /C=US/ST=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
issuer= /C=US/ST=N/A/L=N/A/O=Zimbra Collaboration Suite/OU=Zimbra Collaboration Suite/CN=mail.aaa.com
SubjectAltName=


Thanks