Here is what solr sends to dovecot, the offending uid in this exmaple is '21'
{
  "responseHeader":{
    "status":0,
    "QTime":1,
    "params":{
      "q":"body:Zeitserver"}},
  "response":{"numFound":1,"start":0,"numFoundExact":true,"docs":[
      {
        "uid":[21],
        "box":["2e60f3054059c95fbf580600eb1947e0"],
        "user":["oliver.krone@snoog.ch"],
        "id":"21/2e60f3054059c95fbf580600eb1947e0/oliver.krone@snoog.ch",
        "body":[" ... "],
        "hdr":[" ... "],
        "from":["..."],
        "subject":["..."],
        "to":["..."],
        "_version_":1720682332306800640}]
  }}

Oliver

Hi Oliver

unless I'm missing something that doesn't look like the type of query dovecot launches - dovecot sends various parameters including the request for xml results. The thing that looks odd to me is that the results fields should be single values not arrays enclosed in [], ie I would have expected

"uid":21,

instead of

"uid":[21],

I'd be interested to see the equivalent xml output produced by running a query that dovecot sends.

John