Per the error message 'Temporary failure in name resolution', it sounds like your server was unable to locate smtp.gmail.com.  Can you verify the server does have the ability to connect to this machine and send email?

This may help:
https://stackoverflow.com/questions/11988454/how-to-check-if-smtp-is-working-from-commandline-linux

If it's working, then just retry sending the activation email.

On Mon, Nov 9, 2015 at 5:06 AM Jun Fan <j.fan@qmul.ac.uk> wrote:

Hi all,

 

     I am using smtp.gmail.com as the smtp server with gmail account. It worked perfectly fine in the past. Just this morning, I received an email reporting the issue of failing to receive the activation email. The error message from Galaxy is “This account has not been activated yet but we are unable to send the activation link. “ Similarly in the error report function, there is also an expected error: “An error occurred sending the report by email: [Errno-3] temporary failure in name resolution”. Any ideas of how to solve the issue?

 

Best regards!

Jun

___________________________________________________________
Please keep all replies on the list by using "reply all"
in your mail client.  To manage your subscriptions to this
and other Galaxy lists, please use the interface at:
  https://lists.galaxyproject.org/

To search Galaxy mailing lists use the unified search at:
  http://galaxyproject.org/search/mailinglists/