E-mail support@exapmle.com don't worked

Hello!

If i'm trying to configure e-mail support@example.com in Outlook Connector, then i get error about availiability mail-server. If delete or add one simbol (suppor@example.com or support1@example.com), then other error aboue password (because there is no such address).
SMTP/POP or WEB access on support@example.com worked.

Problem only in OC and only with support@example.com

Server MDaemon (32-bit)

Server SMTP/POP/IMAP: v19.5.5
  Webmail HTTP server: v19.5.5
  Webmail DLL: v19.5.5
  MDaemon Instant Messenger client: v19.0.1
  Content filter server: v19.5.5
  Content filter DLL: v19.5.5
  Content filter GUI: v19.5.5

Calendar API (MDCalendar.dll): v19.5.5
  Mailing list API (MDList.dll): v19.5.5
  Original "Flat-File" API (MDUser.dll): v19.5.5
  COM/DCOM API (MDUserCOM.dll): v19.5.5
  LDAP API (MDUserLDAP.dll): v19.5.5
  ODBC/SQL API (MDUserODBC.dll): v19.5.5
  Dynamic Screening for MDaemon Messaging Server (DynScrn.dll): 19.5.5.4
  ActiveSync Mgmt Module for MDaemon Messaging Server (MDASMgmt.dll): 19.5.5.11
  AutoDiscovery Service for MDaemon Messaging Server (MDAutoDiscover.dll): 19.5.5.7
  Management Web Service for MDaemon Messaging Server (MDMgmtWS.dll): 19.5.5.7
  MDOP (mdop.dll): 1.3.8
  ActiveSync (MDAirSync.dll): v19.5.5.15
  NT/2K/XP utility API (NTUtil.dll): v19.5.5
  DKIM API (LibDKIM.dll): v1.0.21
  AntiSpam server daemon (MDSpamD): v3.42.0
  CalDAV/CardDAV (MDWebDAV.dll): v19.5.5
  XMPP server (WCXMPPServer.exe): v19.5.5

MDaemon Connector:
  Plug-in: v6.5.1