Security

Hello All,

 

Has anybody had success with SMTP in 6.4.0.66263?

 

I've tested the SMTP relay I'm using with a couple of other utilities and it works, so I'm pretty sure that's not where the problem lies. In this case/setup, it's not authenticated (no username/password, just port 25 etc.) on the CPPM and test utilities. Nice and simple, all internal traffic.

 

Having configured the newly build CPPM, and then run a test in "messaging setup", it claims the email was sent. It never arrives. If you look in the event viewer (CPPM), theres an error "email failed", with description claiming "exception reading response". A packet capture of the same, shows the syn-ack returned from the SMTP, followed by a single ACK from CPPM and nothing more.

 

Any suggestions would be great.

 

Is your relay blocking by IP? You should also be able to look in the relay server and see what the error is and why its rejecting it.

Hi Troy,

 

We don't believe so. The test laptop I used with "sendmail" on it was allowed to send smtp through the server without any changes. The Microsoft server logs have been checked, and nothing appears. We know the packets reach it. The theory is the server can't log anything, because nothing "complete" is ever received by it.

 

I've attached a filtered capture (taken in CPPM), showing the whole session when you send a test message from CPPM. CPPM is 10.185.36.47. There's only 3 packets. To me, it looks like CPPM gets the SYN-ACK, ACK's to it, then stops? Happy to be proved wrong?

 

Any tips on the error message in CPPM itself would be great?

 

 

Can't attach the capture for some reason. Here's a pic instead!

Is there any error logs in the cp guest application log. I've dug through our cases and didn't find anything. Was there any restores done?

I would also open a TAC case so engineering can take a look.

There is yes. I've attached a pic. Not sure what reason code "-1" might mean?

 

We thought it might be authentication, and did try it to the server running none, SSL and START-TLS, none of which showed anything different. And the test laptop I SMTP'd to the server on didn't need any security settings???

 

 

Did you try port 587 instead of 465. Also If you can post back what TAC finds out.

is there any update on this? I ran into the same issue with 6.6.10 and a Microsoft Exchange infrastructure.

The CPPM IP has been whitelisted on the exchange servers.

 

EDIT: I just received got a note that there is a loadbalance (Netscaler) involved in this. The IP I configure in the SMTP setting is a loadbalancer IP.

 

 

just to let you know:

In my case it was a problem which was caused by the loadbalancer. If I put in the IP Address of one of the mailservers directly everything works as expected.