Unable to send eMail through an Open SMTP server


(Gregory West) #1

When I try and send an eMail I get the following error:
The Graylog server encountered an error while trying to send an email. This is the detailed error message: org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.dbwsys.mb.ca:25 (com.sun.mail.util.MailConnectException: Couldn’t connect to host, port: smtp.dbwsys.mb.ca, 25; timeout 60000; nested exception is: java.net.UnknownHostException: smtp.dbwsys.mb.ca)

I know the host exists, and it is able to accept on port 25 from inside our network (outside goes to a different server) My server.conf is as follows:

# Email transport
transport_email_enabled = true
transport_email_hostname = smtp.dbwsys.mb.ca
transport_email_port = 25
transport_email_use_auth = false
transport_email_use_tls = false
transport_email_use_ssl = false
#transport_email_auth_username = you@example.com
#transport_email_auth_password = secret
#transport_email_subject_prefix = [graylog]
transport_email_from_email = graylog@dbwsys.mb.ca

# Specify and uncomment this if you want to include links to the stream in your stream alert mails.
# This should define the fully qualified base url to your web interface exactly the same way as it is accessed by your users.
transport_email_web_interface_url = http://10.10.10.2:9000

# The default connect timeout for outgoing HTTP connections.
# Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
# Default: 5s
#http_connect_timeout = 5s

# The default read timeout for outgoing HTTP connections.
# Values must be a positive duration (and between 1 and 2147483647 when converted to milliseconds).
# Default: 10s
#http_read_timeout = 10s

(Jochen) #2

Can the host name of your SMTP server smtp.dbwsys.mb.ca be resolved from the machine running Graylog? It doesn’t look like it can.


(Gregory West) #3

Thank you… You were 100% correct, that is what I thought it was before. Fixed the issue, even updates software over the internat. Rebooted, and something set my DNS back to nothing. Very odd…


(system) #4

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