In JIRA try navigating to Cog Icon -> System -> Outgoing mail. Here are defined the settings for sending mail with JIRA. I would want to confirm that your "From Address" matches the actual account name being used below in the username for authentication. If these don't match, then I would expect your SMTP server to get upset and throw this error. The SMTP server is believing that you might be trying to send messages as user B, but JIRA has the SMTP credentials for user A.
yes, the "From" field is exactly the same as "Username" in "Outgoing Mail" page.
it looks like jira always uses the email of current user to send email, rather than uses the configured one.
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I don't know if that docker image has any customizations, but I doubt it. This specific error we see is generated by your mail server. This isn't commonly see with JIRA. What are you using for an outgoing SMTP mail host? Is this MS Exchange? or Office 365 by chance?
It's possible your mail admin might have a setting on the mail server side or specific to that account that would prevent JIRA from trying to send email from that address with any other user's Full Name other than the one in the system address book. I can understand why that might exist. I suppose the thought is to try to help prevent spam, or confusion of what email address is tied to which person sent what message. This isn't controlled by JIRA though, it's controlled by the mail server settings. JIRA only has the ability to send from one email address, but it will try to use different JIRA user names to change the displayname to correspond to who triggered that notification.
You could also test this out by trying to use a gmail account for JIRA to send mail with, gmail should be able to do this with JIRA correctly.
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It's long time ago this issue. But I know you error:
This is about e-mail issue:
1. You need login in you Tencent Enterprise Account and Edit that e-mail.
2. Deactivate "forced enable secure login"
Try again
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这个是因为腾讯企业邮箱强制开启了安全认证
登录腾讯企业邮箱管理员后台
1. 找到这个发件人的账号、编辑
2. 去掉“强制启用安全登录”
再次实验就好了
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