What does this error mean?

[monsieur_jj]

Hi all What does this error mean:

1>nafxcwd.lib(dllmodul.obj) : error LNK2005: _DllMain@12 already defined in UpdatePanel.obj
1>nafxcwd.lib(afxmem.obj) : error LNK2005: "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z) already defined in LIBCMTD.lib(new.obj)
1>nafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in LIBCMTD.lib(dbgdel.obj)
1>nafxcwd.lib(afxmem.obj) : error LNK2005: "void * __cdecl operator new[](unsigned int)" (??_U@YAPAXI@Z) already defined in libcpmtd.lib(newaop.obj)
1>nafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) already defined in LIBCMTD.lib(delete2.obj)

This happens here:

#include <afxdb.h> // MFC database classes

#include <winsock2.h>

#include <tchar.h>

#ifndef _AFX_NO_AFXCMN_SUPPORT
#include <afxcmn.h> // MFC support for Windows Common Controls
#endif // _AFX_NO_AFXCMN_SUPPORT

//#include "stdafx.h"
#include "..\\Common\\smtpconnection2.h"
BOOL CSMTPConnection2::Connect(LPCTSTR lpszHostDomain,
DWORD dwTimeout /*= 10000*/) throw()
{
CSimpleArray<CAtlString> arrSMTP;
_GetSMTPList(lpszHostDomain, arrSMTP);
for(int i=0; i<arrSMTP.GetSize(); i++)
{
if(CSMTPConnection::Connect(arrSMTP[i], dwTimeout) == TRUE)
return TRUE;
}
return FALSE;
}

void CSMTPConnection2::_GetSMTPList(LPCTSTR lpszHostDomain,
CSimpleArray<CAtlString>& arrSMTP)
{
PDNS_RECORD pRec = NULL;
if(DnsQuery(lpszHostDomain, DNS_TYPE_MX, DNS_QUERY_STANDARD,
NULL, &pRec, NULL) == ERROR_SUCCESS)
{
PDNS_RECORD pRecOrig = pRec;
while(pRec)
{
if(pRec->wType == DNS_TYPE_MX)
arrSMTP.Add(pRec->Data.MX.pNameExchange);
pRec = pRec->pNext;
}
DnsRecordListFree(pRecOrig,DnsFreeRecordList);
}
}

What do you think? Thanks, Jayjay

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