Hello, I've setup PRTG installation and I got problem with SMTP Delivery notification. Here the debug collected from the PRTG core server:

Stat Connected.
Recv 17/01/2014 12:32:32: 220 MxSrv01.domain.local Microsoft ESMTP MAIL Service ready at Fri, 17 Jan 2014 12:32:30 +0100<EOL>
Sent 17/01/2014 12:32:32: EHLO PC165<EOL>
Recv 17/01/2014 12:32:32: 250-MxSrv01.domain.local Hello [192.168.9.225]<EOL>
250-SIZE<EOL>
250-PIPELINING<EOL>
250-DSN<EOL>
250-ENHANCEDSTATUSCODES<EOL>
250-STARTTLS<EOL>
250-X-ANONYMOUSTLS<EOL>
250-AUTH NTLM<EOL>
250-X-EXPS GSSAPI NTLM<EOL>
250-8BITMIME<EOL>
250-BINARYMIME<EOL>
250-CHUNKING<EOL>
250-XEXCH50<EOL>
250 XRDST<EOL>
Sent 17/01/2014 12:32:32: RSET<EOL>
Error sending "Email": Read timed out.

I have no idea about the reason it fails, please someone could give me a suggestion? The PRG release is PRTG Network Monitor 13.4.7.3747. Thanks

Article Comments

Hello,

thank you very much for your KB-Post. The basic SMTP-Connection works, that is shown by the successful EHLO-Command. But then sending the mail runs into a timeout. That could be caused by Tarpitting, or Blacklisting.
Please also try using a different email address to send the email notifications from PRTG.

best regards.


Jan, 2014 - Permalink

Hi!

Thanks for the solution. I was setting up a new PRTG server. I used the old prtg configuration.dat file and copied to the new server.

Everything was working fine. I had issues with the email notifications. As mentioned in this post, i changed the from email address and eveything is working fine now.

old from address : prtg@domain.com new from address : prtg2@domain.com

Thank you.


Aug, 2016 - Permalink

Changing the "from" address as said by latiff fixed it for me too.


Aug, 2016 - Permalink