Assalamualaikum, wr. wb.
Jadi gini gan, waktu ane lagi monitoring Mail Queues, pas ane pencet tombol Refresh di laman Mail Queues di web admin:7071, muncul lah problem kya gambar dibawah.

disitu tertulis "Server error encountered Message: system failure: exception occurred searching mail queue Error code: service.FAILURE Method: [unknown] Details:soap:Receiver". udah ngubek2 gugel belom ketemu yang solve problem ini, barang kali ada yang pernah solved problem ini bisa share dimari.
Wassalam...