DOCUMENT:Q131676 12-NOV-1999 [pcmail] TITLE :PC NTMMTA: Maximum Number of Instances Running as a Service PRODUCT :Microsoft Mail For PC Networks PROD/VER::3.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Mail Multitasking MTA for Windows NT, version 3.5 ------------------------------------------------------------------------------- SYMPTOMS ======== The Microsoft Mail Multitasking MTA for Windows NT (NT MMTA) running as a Service is limited to seven instances per machine. This limit is related to the number of drive letters available on the machine. Each instance of the NT MMTA takes three drive letters. STATUS ====== Microsoft has confirmed this to be a problem in version 3.5 of the Microsoft Mail Multitasking MTA for Windows NT. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ For a machine that has drives A: through E: reserved for other devices (for example, floppy disk drives, CD ROMs, etc.), there are 21 drives left. The following are examples of uses for these drives: Instance 1 2 3 4 5 6 7 Home Drive f i l o r u x Dynamic Drives gh jk mn pq st vw yz Two dynamic drives are used; one for sending mail, and one for receiving mail. This is the same as the DynamicDrives option in the MS-DOS and OS/2 versions of the External program. NOTE: When you use a single postoffice instance, it will map only one drive. Additional query words: 3.50 ====================================================================== Keywords : Technology : kbZNotKeyword2 kbMailSearch kbZNotKeyword3 kbMailMMTA350NT Version : :3.5 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.