SMTP服务器设置-Web应用程序

Question

I am having a few problems debugging an SMTP server connection when deploying a web application.

Basically, I have no control over the firewall or the SMTP server but have been given the details, whereas my web application errors every time saying -

Ex - Failure to send mail.
Inner Ex - Unable to connect to the remote server

I have installed telnet and attempted the following in command prompt -

telnet xxx.xxx.xx.xx 25
telnet <servername> 25

Neither of which work, they both return a message saying -

'could not open connection to host'

I can ping them SMTP server file from the server I am trying to install the web application on.

Does this mean it is a firewall issue? Or is there something else I am missing?

I want to make absolutely sure I have my setup correctand have tested everything possible before going back to the infrastructure guy...

Thanks in advance.

Answer 1

Turns out this was 2 separate issues.

Firstly the firewall was blocking mail from the web server. Once this was resolved we found the second issue -

McAfee was blocking outbound emails, fix for this found here