Support throttling to handle Google SMTP error 454 4.7.0 Too many login attempts, please try again later.

Provide ability to throttle emails and notifications to support SMTP servers that throttle mail after a certain limit like Google/Gmail.

With customers starting to use cloud-based solutions, this scenario could be very common in the near future.

Workarounds

There are some ways to mitigate this problem:

• Set up Sender Policy Framework (SPF) and DKIM records in Google Apps for your domain to conform with Google's bulk sender guidelines. This serverfault.com thread also has a quick guide on this;
• Use the open source program PostFix for throttled SMTP relay. See this article to learn more about setting it up;
• Edit the Mail Queue Service's properties to increase the interval at which JIRA sends e-mails. This interval controls how frequently the mail queue is processed and could be used in conjunction with the other options to reduce the rate ofoutgoing mail;