I'm using zimbra 5.0.18 on debian 4 etch. Its working fine and also it has IM(BETA) version.

We have enabled zimbra IM. It was working properly without any issues till now. We use pidgin to connect IM. From last couples days whenever the network disconnects & reconnects of desktop machine It will ask to accept the certificate.

This was not happening earlier. It couldn't get the what problem is. Can one please tell me what is the reason please...

Thanks in advance.