I just upgraded from 4.5.3GA to 4.5.4 Network and I have two problems:
-one is this in zimbra.log:
is_entry_objectclass("", "188.8.131.52") no objectClass attribute (repeated a lot)
I also have a lot of 'index param failed' but I read that was normal.
-second is that a client that used to be able to use his Nokia E phone to read mail using imap/pop/smtp now does nto connect. (it may or may not be Zimbra's fault, but it started just after the upgrade)
Any hints on where to look?