Dear all,
I am having problems with exchange 2010 sending emails through a postfix smarthost server which disconnects the sessions. I also use a sendmail as a smarthost
server which is working just fine but I have to switch to postfix and cannot do this as long as the encryption does not work.
Here is the log file of the postfix server:
Jan 4 14:18:59 server7 postfix/smtpd[1659]: initializing the server-side TLS engine
Jan 4 14:18:59 server7 postfix/smtpd[1659]: connect from server1.mydomain.com[192.168.20.10]
Jan 4 14:18:59 server7 postfix/smtpd[1659]: setting up TLS connection from server1.mydomain.com[192.168.20.10]
Jan 4 14:18:59 server7 postfix/smtpd[1659]: server1.mydomain.com[192.168.20.10]: TLS cipher list "aNULL:-aNULL:ALL:+RC4:@STRENGTH"
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:before/accept initialization
Jan 4 14:18:59 server7 postfix/smtpd[1659]: read from 7F4823FA5210 [7F4823FAB1B0] (11 bytes => -1 (0xFFFFFFFFFFFFFFFF))
Jan 4 14:18:59 server7 postfix/smtpd[1659]: read from 7F4823FA5210 [7F4823FAB1B0] (11 bytes => 11 (0xB))
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0000 16 03 01 00 5a 01 00 00|56 03 01 ....Z... V..
Jan 4 14:18:59 server7 postfix/smtpd[1659]: read from 7F4823FA5210 [7F4823FAB1BE] (84 bytes => 84 (0x54))
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0000 54 a9 3d b9 0d 5e 8b 64|7c 6b b5 21 f2 93 e7 84 T.=..^.d |k.!....
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0010 17 ea 33 d7 e5 13 f2 75|3a 87 38 32 01 85 82 5b ..3....u :.82...[
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0020 00 00 18 00 2f 00 35 00|05 00 0a c0 13 c0 14 c0 ..../.5. ........
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0030 09 c0 0a 00 32 00 38 00|13 00 04 01 00 00 15 ff ....2.8. ........
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0040 01 00 01 00 00 0a 00 06|00 04 00 17 00 18 00 0b ........ ........
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0050 00 02 01 ...
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0053 - <SPACES/NULLS>
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 read client hello A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 write server hello A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 write certificate A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 write key exchange A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 write server done A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: write to 7F4823FA5210 [7F4823FB8B70] (1911 bytes => 1911 (0x777))
[...]
Jan 4 14:18:59 server7 postfix/smtpd[1659]: 0774 - <SPACES/NULLS>
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:SSLv3 flush data
Jan 4 14:18:59 server7 postfix/smtpd[1659]: read from 7F4823FA5210 [7F4823FAC803] (5 bytes => 0 (0x0))
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept:failed in SSLv3 read client certificate A
Jan 4 14:18:59 server7 postfix/smtpd[1659]: SSL_accept error from server1.mydomain.com[192.168.20.10]: lost connection
Jan 4 14:18:59 server7 postfix/smtpd[1659]: lost connection after STARTTLS from server1.mydomain.com[192.168.20.10]
Jan 4 14:18:59 server7 postfix/smtpd[1659]: disconnect from server1.mydomain.com[192.168.20.10]
I have read in the post at https://social.technet.microsoft.com/Forums/exchange/en-US/6db38364-cb08-45c0-b159-3ddf30ef0b3e/exchange-2010-send-connector-uses-ssltls-and-cannot-connect-to-smarthost-how-to-deactivate-ssl?forum=exchange2010how to deactivate the SSL encryption, but this is of course a security flaw, if I am not mistaken. I would like to encrypt the connection between the servers for obvious security reasons but I have come to a standstill...
My Exchange server certificate is configured as follows:
AccessRules : {System.Security.AccessControl.CryptoKeyAccessRule, System.Security.AccessControl.CryptoKeyAcc
ule, System.Security.AccessControl.CryptoKeyAccessRule, System.Security.AccessControl.CryptoKe
essRule}
CertificateDomains : {server1, server1.solid-con.com}
HasPrivateKey : True
IsSelfSigned : True
Issuer : CN=server1
NotAfter : 22/01/2017 13:18:02
NotBefore : 22/01/2012 13:18:02
PublicKeySize : 2048
RootCAType : None
SerialNumber : 6925D91285B649BD4D5E4297F1A48471
Services : IMAP, POP, IIS, SMTP
Status : Valid
Subject : CN=server1
Thumbprint : 939A37173BF84E352CEDC74F7D9A3D71F498A005
AccessRules : {System.Security.AccessControl.CryptoKeyAccessRule, System.Security.AccessControl.CryptoKeyAcc
ule, System.Security.AccessControl.CryptoKeyAccessRule}
CertificateDomains : {WMSvc-SERVER1}
HasPrivateKey : True
IsSelfSigned : True
Issuer : CN=WMSvc-SERVER1
NotAfter : 19/01/2022 12:56:44
NotBefore : 22/01/2012 12:56:44
PublicKeySize : 2048
RootCAType : Registry
SerialNumber : 1DB8711F7ADC5CB54196468EF2FF5D21
Services : None
Status : Valid
Subject : CN=WMSvc-SERVER1
Thumbprint : 191D86BDE274510453D58DDB91D253DABBCF05F1
And My Default Send Connector is configured as follows:
AddressSpaces : {SMTP:*;1}AuthenticationCredential : System.Management.Automation.PSCredential
Comment :
ConnectedDomains : {}
ConnectionInactivityTimeOut : 00:10:00
DNSRoutingEnabled : False
DomainSecureEnabled : False
Enabled : True
ErrorPolicies : Default
ForceHELO : False
Fqdn :
HomeMTA : Microsoft MTA
HomeMtaServerId : SERVER1
Identity : Internet
IgnoreSTARTTLS : False
IsScopedConnector : False
IsSmtpConnector : True
LinkedReceiveConnector :
MaxMessageSize : unlimited
Name : Internet
Port : 25
ProtocolLoggingLevel : None
RequireOorg : False
RequireTLS : False
SmartHostAuthMechanism : None
SmartHosts : {server7.mydomain.com, server6.mydomain.com}
SmartHostsString : server7.mydomain.com,server6.mydomain.com
SmtpMaxMessagesPerConnection : 20
SourceIPAddress : 0.0.0.0
SourceRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
SourceTransportServers : {SERVER1}
TlsAuthLevel :
TlsDomain :
UseExternalDNSServersEnabled : False
Any help would be greatly appreciated as I am
stuck...
Luca