mail configuration

[david-w-mead]

Hi,
I'm trying set up cytomine using the Cytomine-bootstrap and configuration.sh
Out smtp mail relay does not require a password, so I am not sure how to configure. I've tried a number of combinations, but nothing seems to work. Right now I have this configuation:

SENDER_EMAIL='noreply@testserver'
#SENDER_EMAIL_PASS=''
SENDER_EMAIL_SMTP_HOST='smtprelay'
SENDER_EMAIL_SMTP_PORT='25'

I am getting the following error:

06-02-2018 18:20:54,419 INFO StorageService - create storage for newuser
06-02-2018 18:20:54,497 INFO ModelService - Command class be.cytomine.command.AddCommand with flag false
06-02-2018 18:20:54,775 INFO CytomineMailService - send org.springframework.mail.javamail.SmartMimeMessage@4c14f1b1
06-02-2018 18:20:54,803 ERROR CytomineMailService - can't send email org.springframework.mail.javamail.SmartMimeMessage@4c14f1b1 (Exception)
06-02-2018 18:20:54,816 INFO ModelService - Command class be.cytomine.command.DeleteCommand with flag false
06-02-2018 18:20:54,845 INFO RequestFilters - login.createAccount Request took 533ms