gggg:dddd:hh received by <computer> to <address> at <time>
where gggg is the first 4 hexadecimal digits of the source queue globally unique identifier (GUID); dddd is the internal message identifier; and hh is the hop count.
The internal message identifier is the message sequence number, which is part of the entire message identifier. The entire message identifier is not used because it is too big to be easily read (a 16-byte source GUID and a 4-byte sequence number).