it is from forum thread I suppose http://www.zabbix.com/forum/showthread.php?t=28931
Can you take a look at it...
I would love to upgrade, but pending this issue I'm stuck at 2.02
Is there a way to put id of item that's responsible?
Fixed in development branch svn://svn.zabbix.com/branches/dev/ZBXNEXT-1405
Successfully tested!
Released in:
pre-2.0.8 r37599
pre-2.1.2 r37600
(1) whatsnew (with before/after examples) 
wiper added to whatsnew, please review: https://www.zabbix.com/documentation/2.0/manual/introduction/whatsnew208?&#improved_warnings_for_messages_exceeding_size_limits
<richlv> thanks, i only slightly changed formatting, CLOSED
After the change to show the IP I got this error, but no IP was shown:
64205:20131017:082123.932 Message size 140737488269136 from IP exceeds the maximum size 134217728 bytes. Message ignored.
The size is obviously wrong so this is not a simple problem of client sending larger data packet to server. The empty IP field indicates that there was a problem obtaining IP address from socket which together with ZBX-6835 suggests that connection was dropped in the beginning of data exchange.
How I could debug reason why connection has been dropped in the beginning of data exchange?
We seen a lots of such messages without IP in logs.
Now it should write real reason (TCP error description) why the connection was dropped instead of bogus message about message size.