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UnknownHostException: smtp.gmail.com JIRA Software (v7.12.)

LITUS Group

1). first i enabled Less Secure Apps

2). i tested SECURE_SMTP protocol with port 465 and TLS unchecked and SMTP protocol with port 587 and TLS checked those follow as;

port 587.PNG

this is my log file

An error has occurred with sending the test email:
com.atlassian.mail.MailException: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 465; timeout 100000;
nested exception is:
java.net.UnknownHostException: smtp.gmail.com
at com.atlassian.mail.server.impl.SMTPMailServerImpl.sendWithMessageId(SMTPMailServerImpl.java:225)
at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:162)
at com.atlassian.jira.plugins.mail.webwork.SendTestMail.doExecute(SendTestMail.java:107)

Accepted answers

All comments

Gonchik Tsymzhitov

Hi!

Your problem related to the DNS resolving on the installed server.

Could you login into server through ssh, and check dns resolving by command

nslookup smtp.gmail.com

After fixing this one problem, you can check on Jira configuration side.

Cheers,

Gonchik Tsymzhitov

LITUS Group

i tried, it's said above error

LITUS Group

i hosted in digitalocean

Nic Brough -Adaptavist-

Well, that's pretty clear - the server does not have a working DNS, so it can't look up any other systems.

You could put an ip address in for gmail, but that should be regarded as a temporary kludge to get it working for now.

What you need to do is fix the broken DNS on the server. That's not really an Atlassian related problem, and depends on the operating system on your server. You might need to talk to digital ocean to get it fixed, but as you've got root on the server you could probably fix it yourself. Look at the network settings for it and add at least one DNS server for it.

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