Edit C:\Windows\System32\inetsrv\smtp.inf

[Version]
Signature = "$Windows NT$"
[SMTP_REG]
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	ConnectionTimeOut	LM/SmtpSvc			1013	0x1	1	1	4	0x258
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxConnections		LM/SmtpSvc			1014	0x1	1	1	4	0x77359400
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxMsgSize		LM/SmtpSvc			36891	0x1	1	1	4	0x200000
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxMsgSizeBeforeClose	LM/SmtpSvc			36892	0x1	1	1	4	0xa00000
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxOutConnections	LM/SmtpSvc			36894	0x1	1	1	4	0x3e8
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxOutConnectionsDom	LM/SmtpSvc			36925	0x1	1	1	4	0x64
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRcpts		LM/SmtpSvc			36895	0x1	1	1	4	0x64
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRemoteTimeOut	LM/SmtpSvc			36921	0x1	1	1	4	0x258
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRetryAttempts	LM/SmtpSvc			36896	0x1	1	1	4	0x30
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRetryAttempts	LM/SmtpSvc			36898	0x1	1	1	4	0x30
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRetryMinutes		LM/SmtpSvc			36897	0x1	1	1	4	0x3c
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxRetryMinutes		LM/SmtpSvc			36899	0x1	1	1	4	0x3c
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	EnableReverseLookup	LM/SMtpSvc			36884	0x1	1	1	4	0x0
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxErrors		LM/SMtpSvc			36887	0x1	1	1	4	0x14
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MaxHopCount		LM/SMtpSvc			36886	0x1	1	1	4	0xf
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	ShouldDeliver		LM/SMtpSvc			36881	0x1	1	1	4	0x0
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	SmartHost		LM/SMtpSvc			36906	0x1	1	2	0	%__EMPTY%
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	SmartHostUseType	LM/SMtpSvc			36905	0x1	1	1	4	0x0
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogType			LM/SmtpSvc			4000	0x1	1	1	4	0x0
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFileDirectory	LM/SmtpSvc			4001	0x1	1	4	0	%WinDir%\System32\LogFiles
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFileTruncateSize	LM/SmtpSvc			4004	0x1	1	1	4	0x1388000
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFilePeriod		LM/SmtpSvc			4003	0x1	1	1	4	0x1
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFilePluginOrder	LM/SmtpSvc			4011	0x1	1	2	0	{FF160663-DE82-11CF-BC0A-00AA006111E0}
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	RoutingDll		LM/SMtpSvc			36883	0x1	1	2	0	%WinDir%\System32\inetsrv\routeldp.dll
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	NTAuthenticationProviders	LM/SmtpSvc		6032	0x1	2	2	0	GSSAPI,NTLM
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	Authorization		LM/SmtpSvc			6000	0x1	2	1	4	0x1
0	1	HKLM	System							None			LM/SMtpSvc			36920	0x1	1	5	0	%__EMPTY%
0	1	HKLM	System							None			LM/SMtpSvc			36871	0x1	2	1	4	0x14
0	1	HKLM	System							None			LM/SmtpSvc/Info			4012	0x1	1	2	0	%__SMTP_LOG_FILE_FORMATS%
0	1	HKLM	System							None			LM/SMtpSvc			36931	0x1	1	1	4	0x0
0	1	HKLM	System							SmtpDisableRelay		LM/SMtpSvc		36973	0x1	1	1	4	0x1
0	1	HKLM	System							RelayIpList			LM/Smtpsvc		36970	0x9	2	3	0	18000080200000803c00008044000080010000004c00000000000000000000000100000001000000020000000200000004000000000000004c00008000000000000000000000000000000000ffffffff00000000
0	1	HKLM	System							SmtpRemoteRetryThreshold	LM/SMtpSvc		36995	0x1	1	1	4	0x3
0	1	HKLM	System							SmtpRemoteProgressiveRetry	LM/SMtpSvc		36996	0x1	1	2	0	15,30,60,240
0	1	HKLM	System							SmtpLocalDelayExpireMinutes	LM/SMtpSvc		37017	0x1	1	1	4	0x2d0
0	1	HKLM	System							SmtpLocalNDRExpireMinutes	LM/SMtpSvc		37018	0x1	1	1	4	0xb40
0	1	HKLM	System							SmtpRemoteDelayExpireMinutes	LM/SMtpSvc		37019	0x1	1	1	4	0x2d0
0	1	HKLM	System							SmtpRemoteNDRExpireMinutes	LM/SMtpSvc		37020	0x1	1	1	4	0xb40
0	1	HKLM	System							SmtpDSNOptions			LM/SMtpSvc		37021	0x1	1	1	4	0x0
0	1	HKLM	System							SmtpDSNLanguageID		LM/SMtpSvc		37022	0x1	1	1	4	0x0
0	1	HKLM	System							SmtpInboundCommandSupportOptions	LM/SMtpSvc	36998	0x1	1	1	4	0x7574c1
0	1	HKLM	System							SmtpOutboundCommandSupportOptions	LM/SMtpSvc	36999	0x1	1	1	4	0x7
0	1	HKLM	System							ServiceVersion			LM/SMtpSvc		36931	0x1	1	1	4	0x5
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogType			LM/SmtpSvc/1			4000	0x1	1	1	4	0x0
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFileDirectory	LM/SmtpSvc/1			4001	0x1	1	4	0	%WinDir%\System32\LogFiles
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFileTruncateSize	LM/SmtpSvc/1			4004	0x1	1	1	4	0x1388000
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	LogFilePeriod		LM/SmtpSvc/1			4003	0x1	1	1	4	0x1
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	ConnectionTimeOut	LM/SmtpSvc/1			1013	0x1	1	1	4	0x258
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MailPickupDir		LM/SMtpSvc/1			36880	0x1	1	2	0	%__MAILROOT%\Pickup
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MailQueueDir		LM/SMtpSvc/1			36875	0x1	1	2	0	%__MAILROOT%\Queue
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	BadMailDir		LM/SMtpSvc/1			36909	0x1	1	2	0	%__MAILROOT%\Badmail
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	MailDropDir		LM/SMtpSvc/1		36882	0x1	1	2	0	%__MAILROOT%\Drop
1	1	HKLM	System\CurrentControlSet\Services\SmtpSvc\Parameters	RoutingDll		LM/SMtpSvc/1			36883	0x1	1	2	0	%WinDir%\System32\inetsrv\routeldp.dll
0	1	HKLM	System							None			LM/SMtpSvc/1			1016	0x1	2	1	4	0x4
0	1	HKLM	System							None			LM/SMtpSvc/1			1099	0x1	2	1	4	0x0
0	1	HKLM	System							None			LM/SMtpSvc/1			1015	0x1	1	2	0	%__SMTP_DEFAULT_SITE_NAME%
0	1	HKLM	System							None			LM/SMtpSvc/1			1023	0x0	1	5	0	:25:
0	1	HKLM	System							None			LM/SMtpSvc/1			2021	0x0	1	5	0	%__EMPTY%
0	1	HKLM	System							None			LM/SMtpSvc/1			36918	0x1	1	1	4	0xc
0	1	HKLM	System							None			LM/SMtpSvc/1			36929	0x1	1	1	4	0x1d1
0	1	HKLM	System							None			LM/SMtpSvc/1			36914	0x1	1	1	4	0x19
0	1	HKLM	System							None			LM/SMtpSvc/1			36925	0x1	1	1	4	0x64
0	1	HKLM	System							None			LM/SMtpSvc/1			36922	0x1	1	2	0	%__EMPTY%
0	1	HKLM	System							None			LM/SMtpSvc/1			36923	0x1	1	2	0	Postmaster
0	1	HKLM	System							None			LM/SMtpSvc/1			36912	0x1	1	2	0	%__EMPTY%
0	1	HKLM	System							None			LM/SMtpSvc/1			36871	0x1	2	1	4	0x14
4	1	HKLM	System							SmtpDsUseCat		LM/SMtpSvc/1/RoutingSources	36994	0x1	1	1	4	0
4	1	HKLM	System							SmtpDsFlags		LM/SMtpSvc/1/RoutingSources	37024	0x1	1	1	4	0x9
0	1	HKLM	System							None			LM/SMtpSvc			1002	0x0	1	2	0	IIsSmtpService
0	1	HKLM	System							None			LM/SmtpSvc/Info			1002	0x0	1	2	0	IIsSmtpInfo
0	1	HKLM	System							None			LM/SMtpSvc/1			1002	0x0	1	2	0	IIsSmtpServer
0	1	HKLM	System							None			LM/SMtpSvc/1/Sessions		1002	0x0	1	2	0	IIsSmtpSessions
0	1	HKLM	System							None			LM/SMtpSvc/1/Alias		1002	0x0	1	2	0	IIsSmtpAlias
0	1	HKLM	System							None			LM/SMtpSvc/1/User		1002	0x0	1	2	0	IIsSmtpUser
0	1	HKLM	System							None			LM/SMtpSvc/1/DL			1002	0x0	1	2	0	IIsSmtpDL
0	1	HKLM	System							None			LM/SMtpSvc/1/Domain		1002	0x0	1	2	0	IIsSmtpDomain
0	1	HKLM	System							None			LM/SMtpSvc/1/RoutingSources		1002	0x0	1	2	0	IIsSmtpRoutingSource
1	1	HKLM	System							None			LM/SMTPSVC			36987	0x1	1	2	0	%WinDir%\System32\inetsrv\aqueue.dll

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