1) When I enter the following string into the search bar in the Zimbra Web client:
in:"inbox" #X-pstn-levels:"S: 9.4*"
nine messages are returned. Here is a header from one of those messages:
X-pstn-levels: (S: 9.48487/99.90000 CV:99.9000 FC:95.5390 LC:95.5390 R:95.9108 P:95.9108 M:95.5423 C:98.6951 )
However, when I enter the string:
in:"inbox" #X-pstn-levels:"S: 0.0*"
I get "no results found". However, there are many messages in my INBOX with the following header:
X-pstn-levels: (S: 0.00000/36.06115 CV:99.9999 R:95.9108 P:95.9108 M:97.0282 C:98.6951 )
The problem seems to have something to do with the "0.00000" string, as the search does not fail when using non-zero numbers.
Support for what I am trying to accomplish was added via Bug 7384 - IMAP search on non-indexed header returns error.
2) On a side note, these searches only work sometimes. Often, I get the following error:
A network service error has occurred
msg: A network service error as occurred.
detail: HTTP response status 504
What could be causing this error?