Emails are skipped, not being sent

AI-generated summary

User noamoss encountered an issue with emails not being sent in their Discourse installation (1.7.0 Beta 2 + 8), resulting in a “501 Syntax error” in the mail logs. Despite checking the host name, services, and locale settings, the issue persisted. However, after reinstalling and reconfiguring, the problem disappeared. noamoss suspects that the issue might have been caused by an Hebrew email site title entered in the admin/site_settings/category/email, which could be a consideration for future instances of the “501 Syntax error”.

Hi,
I just installed new Discourse (1.7.0 Beta 2 + 8)
For unknown reason I keep getting “[Sender] 501 Syntax error on the mail logs.”

Already checked the following:

  • Host name was declared as domain, not using IP.
  • separate separate services for posting (pop3) and delivering.
  • I am using Hebrew locale, but same issue also when I tried to swtich to English.

Notification email address was defined as noreply@discourse.my_subdomain, and did not work also when I tried info@discourse.mydomain.

Any idea?

I am using ‘discourse.bagiva.tk’, but I could not make it work also when I tried just using ‘bagiva.tk’.

Maybe something related to my definitions?

The problem disappeared after reinstalling. After reconfiguring my guess is that I might have entered an Hebrew email site title in the admin/site_settings/category/email.

Should consider it when you see “[Sender] 501 Syntax error” in the future.