Cause of suspension reference

A suspended ticket's cause_id and cause_name properties contain information about the cause of the suspension. Zendesk returns these properties in the Suspended Tickets endpoints, or, if recovered, in the Suspended ticket recovery event.

The following table contains for possible values for cause_id and cause_name.

Cause id	Cause name	Description
0	spam	Detected as spam
1	not_on_whitelist	Sender domain not on allowlist
2	unverified	Submitted by unverified user
3	auto_mailer	Automated response mail
4	loop	Detected as mail loop
5	unknown_user_update	Unknown user tried to update existing ticket
6	other_user_update	End user only allowed to update their own tickets
7	auto_delivery_failure	Automated response mail, delivery failed
8	auto_vacation	Automated response mail, out of office
9	system_user	Detected email as being from a system user
10	unknown_author	Permission denied for unknown email submitter
11	blank	Email has no content
12	signup_required	User must sign up to submit email, user notified
13	blocklisted	Email is from a blocklisted sender or domain
14	backscatter	Backscatter from remote mail server
15	disabled	Email integration disabled
16	to_noreply	Email for "noreply" address
17	server_lock	Received via unknown mail server
18	unserviceable_account	Emails do not get processed for expired accounts
19	unprocessable_email	Automatic email processing failed
20	unauthenticated_email_update	Permission denied due to unauthenticated email update
21	registered_user_logged_out	Submitted by registered user while logged out
22	from_support_address	Received from Zendesk Support email address
23	from_zendesk_account	Email is from a Zendesk account
24	content_processor_timed_out	Email took too long to process
25	malware_detected	Malware detected
26	failed_email_authentication	Email authentication failed
27	from_noreply	Email from "noreply" address
28	account_owner_email_unverified	Submitted by unverified account owner
29	malicious_pattern_detected	Content pattern detected as malicious
30	number_recipients_exceeds_threshold	Number of email recipients exceeds threshold
31	light_agent_forwarded	Email forwarded by light agent
32	failed_dmarc_authentication	Email failed DMARC authentication