im trying to enable e-mail alerts on my solarwind server but the problem is that my solarwind server cant contact the smtp server for some reason? whenever i try to telnet on port 25 the smtp server it fails , while i can telnet other devices from my solarwind server , at the same time i can telnet on port 25 my smtp servers from other devices , so that leaves my solarwind server and my smtp server that cant contact each other for some strange reason?
The issue is clearly outside the SolarWinds software. You will need to check with your email admin on the correct settings for email relay. It need not be port 25. Some email servers require authentication and/or encryption (TLS).
but from my workstation computer i can telnet on port 25 without TLS or authentication? could the solarwind server need something to be enabled to log in smtp? bear in mind the telnet is working on the solarwind server and i can telnet other devices?
Nothing needs to be enabled on the solarwinds server to connect to an SMTP server for mail relay. It is sounding like a firewall or routing issue from the SolarWinds server.
well other devices in the same solarwind server subnet can contact the smtp mail server so i guess that rules out the routing issue? also i can ping the smtp mail server from my solarwind server
I am facing similar issue.I can reach SMTP on port 25 on the server ,i can also reach SMTP Ip via ping test on the server but each time i do test it fails.
2020-07-10 19:45:35,113  WARN SolarWinds.Orion.Core.Actions.Utility.Smtp.SmtpServerConnectionChecker - (null) Failed to get host entry X.X.X.X port 25. No such host is known
2020-07-10 20:17:27,517  ERROR SolarWinds.Orion.Core.Actions.Impl.Email.EmailMethodInvoker - (null) Test for SMTP server (X.X.X.X , SSL disabled, Authentication disabled) failed
System.Runtime.InteropServices.COMException (0x80040213): The transport failed to connect to the server.
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