certificate is expired

[rehab.raafat]

hi all,
I've an issue that the zimbra certificate has been expired 25 days ago but the server still running with no problems appearing to me.I just want to know if not getting the new certificate, that will cause any problems? & if the certificate is a must??

[phoenix]

Yes, you need a valid certificate on your server. You should either generate a new certificate or install a renewed commercial certificate (if that's what you have).