After JIRA creates an issue, the mail is delayed for at least 10 minutes

[Liu Zhengjun]

After JIRA creates an issue, I need to wait more than 10 minutes to receive the email.

After Jenkins builds, I can receive the email immediately. 

They use the same mail server

[Ollie Guan]

Hi @Liu Zhengjun ,

There could be multiple causes for this to happen, you will need to diagnose following the steps below to see if which could be the cause to the observation.

https://confluence.atlassian.com/jirakb/troubleshoot-slow-mail-notifications-in-jira-server-397803670.html

[Liu Zhengjun]

Thank you. The problem has been solved.

[Walter Buggenhout]

Hi @Liu Zhengjun,

This can be caused by several things, but potentially a scheduling setting in your Jira instance. Have a look at this troubleshooting article