#ifndef	_H_SPAMFILTER
#define	_H_SPAMFILTER

// Your filter receives a pointer to the core server through ISpamFilter::ConfigureFrom()
interface ISMailServer;

// LPFNREJECTED is optional for returning details about spam to the host
typedef VOID (WINAPI* LPFNREJECTED)(LPSTR lpszSender, LPSTR lpszHeaders, LPSTR lpszSpamTag, LPVOID lpParam);

// Implement ISpamFilter to build a filter compatible with SimbeyMail
interface ISpamFilter
{
	virtual VOID ReleaseFilter (VOID) = 0;
	virtual VOID ConfigureFrom (ISMailServer* lpServer) = 0;
	virtual BOOL ProcessLetter (LPSTR lpszUser, LPSTR lpszFile, LPSTR lpszHeader, INT cHeader, BOOL bFromProxy) = 0;

	virtual VOID SetRejectionHandler (LPFNREJECTED lpfnRejected, LPVOID lpParam) = 0;

	virtual BOOL TrainUsingSpam (LPSTR lpszUser, LPSTR lpszSpamFile) = 0;
	virtual BOOL TrainUsingHam (LPSTR lpszUser, LPSTR lpszHamFile) = 0;

	virtual VOID EnableFilter (LPSTR lpszUser, BOOL bEnabled) = 0;
	virtual BOOL CheckEnabled (LPSTR lpszUser) = 0;

	virtual BOOL AddSafeAddress (LPSTR lpszAddress) = 0;
	virtual BOOL RemoveSafeAddress (LPSTR lpszAddress) = 0;
	virtual BOOL CheckSafeAddress (LPSTR lpszAddress) = 0;
	virtual BOOL GetSafeAddress (LONG index, LPSTR lpszAddress) = 0;
};

// Export GetSpamFilter() from your SPAMFILTER.DLL
BOOL WINAPI GetSpamFilter (ISpamFilter** lplpFilter);

// SMailSvc.exe and ServerGui.exe only look for a filter named SPAMFILTER.DLL, but there's
// nothing stopping you from building and using multiple filter DLLs managed by a parent
// filter named SPAMFILTER.DLL

#endif