Currently running 12.0.1 Symantec DLP
Windows Server 8 Gigs Ram VM
SMTP Prevent running in forwarding mode - Approximately 1000 outbound email messages per hour pass through
Outbound Mailflow looks like this currently:
Exchange_2010 ---> DLP SMTP Prevent ---> PostFix MTA ---> ( CLOUD )
Exchange currently sends email directly to PostFix MTA
When we place DLP SMTP Prevent inline and configure Exchange to hand off to DLP SMTP prevent we get a connection with the downstream Postfix and it looks fine.
Testing: We can telnet directly from Exchange 2010 to DLP SMTP Prevent and get the Postfix MTA banner. We can also manually type/send SMTP Email via telnet through DLP and out PostFix just fine and logs say it is successful. However, when we configure the Exchange 2010 connector to send email to DLP and turn it on it stays queued. The logs say the downstream PostFix connection is open but something is amiss. Note we have tried with both 10025 config and standard 25 ports.
In the logs I see
java.lang.NullPointerException - Which suggests a variable value field is NULL and its expecting a value? I see in the logs an empty field in the string for <mta> but not so sure what that is or if its related. Whatever it is when we manually send SMTP Email via Telnet from Exchange through it works perfectly.
HEre are the logs:
27/Mar/14:13:56:57:967-0400 [INFO] (SMTP_CONNECTION.1200) Listening for incoming connections (local=0.0.0.0:25)
27/Mar/14:13:56:58:045-0400 [INFO] (SMTP_CORE.1100) Starting SMTP Prevent
27/Mar/14:14:00:16:369-0400 [INFO] (SMTP_CONNECTION.1201) Connection accepted (tid=2b cid=1 local=10.180.101.197:25 remote=10.180.100.59:64248)
27/Mar/14:14:00:16:384-0400 [INFO] (SMTP_CONNECTION.1203) Forward connection established (tid=2b cid=2 local=10.180.101.197:4771 remote=10.180.102.83:25)
27/Mar/14:14:00:16:400-0400 [INFO] (SMTP_CONNECTION.5203) Forward connection error (tid=2b cid=2 mta=<> reason=java.lang.NullPointerException)
27/Mar/14:14:00:16:400-0400 [SEVERE] (SMTP_CONNECTION.5204) Peer disconnected unexpectedly (tid=2b cid=2 local=<> remote=<> reason=java.lang.NullPointerException)
27/Mar/14:14:00:16:400-0400 [INFO] (SMTP_CONNECTION.1205) Service connection closed (tid=2b cid=1 local=10.180.101.197:25 remote=10.180.100.59:64248 messages=0 time=0.03s)
27/Mar/14:14:00:57:740-0400 [INFO] (SMTP_CONNECTION.1201) Connection accepted (tid=30 cid=1 local=10.180.101.197:25 remote=10.180.100.33:18046)
27/Mar/14:14:00:57:740-0400 [INFO] (SMTP_CONNECTION.1203) Forward connection established (tid=30 cid=2 local=10.180.101.197:4784 remote=10.180.102.83:25)
27/Mar/14:14:00:58:395-0400 [INFO] (SMTP_CONNECTION.5203) Forward connection error (tid=30 cid=2 mta=<> reason=java.lang.NullPointerException)
27/Mar/14:14:00:58:411-0400 [SEVERE] (SMTP_CONNECTION.5204) Peer disconnected unexpectedly (tid=30 cid=2 local=<> remote=<> reason=java.lang.NullPointerException)
27/Mar/14:14:00:58:411-0400 [INFO] (SMTP_CONNECTION.1205) Service connection closed (tid=30 cid=1 local=10.180.101.197:25 remote=10.180.100.33:18046 messages=0 time=0.67s)
27/Mar/14:14:05:16:433-0400 [INFO] (SMTP_CONNECTION.1201) Connection accepted (tid=2c cid=1 local=10.180.101.197:25 remote=10.180.100.59:65177)
27/Mar/14:14:05:16:448-0400 [INFO] (SMTP_CONNECTION.1203) Forward connection established (tid=2c cid=2 local=10.180.101.197:4793 remote=10.180.102.83:25)
27/Mar/14:14:05:16:464-0400 [INFO] (SMTP_CONNECTION.5203) Forward connection error (tid=2c cid=2 mta=<> reason=java.lang.NullPointerException)
27/Mar/14:14:05:16:464-0400 [SEVERE] (SMTP_CONNECTION.5204) Peer disconnected unexpectedly (tid=2c cid=2 local=<> remote=<> reason=java.lang.NullPointerException)
27/Mar/14:14:05:16:464-0400 [INFO] (SMTP_CONNECTION.1205) Service connection closed (tid=2c cid=1 local=10.180.101.197:25 remote=10.180.100.59:65177 messages=0 time=0.03s)
27/Mar/14:14:05:58:430-0400 [INFO] (SMTP_CONNECTION.1201) Connection accepted (tid=32 cid=1 local=10.180.101.197:25 remote=10.180.100.33:19607)
27/Mar/14:14:05:58:430-0400 [INFO] (SMTP_CONNECTION.1203) Forward connection established (tid=32 cid=2 local=10.180.101.197:4806 remote=10.180.102.83:25)
27/Mar/14:14:05:58:446-0400 [INFO] (SMTP_CONNECTION.5203) Forward connection error (tid=32 cid=2 mta=<> reason=java.lang.NullPointerException)
27/Mar/14:14:05:58:446-0400 [SEVERE] (SMTP_CONNECTION.5204) Peer disconnected unexpectedly (tid=32 cid=2 local=<> remote=<> reason=java.lang.NullPointerException)