550 5.7.0: relay account suspended for abuse
Google has temporarily suspended the account behind your relayed mail from sending, because it detected abuse such as spam from it.
- Gmail
- Provider
- Permanent (5xx)
- Class
- Sources checked
- Author
At a glance
- Code
- 550 5.7.0
- Provider
- Gmail and Google Workspace
- Temporary or permanent
- PermanentRefused for good: the message comes back to the sender, and resending it gets the same answer.
- Who has to act
- The sender. The fix is on the sending side: your domain, your server or your list.
- What the server says
550 5.7.0 The sending email account has been temporarily suspended due to abuse.
What it means
Google's SMTP relay spam policy lets it stop relay mail from accounts that send spam or otherwise abuse the service. The account sending through smtp-relay.gmail.com has been temporarily suspended under that policy, so its relayed mail is refused. Google links this reply to its SMTP relay spam policy. A compromised device or account, or a legitimate system that sent unwanted bulk mail, is the usual cause. Clean that up before the suspension ends, or it is likely to happen again.
Common causes
- A compromised user account, device or application sending spam through the relay.
- Bulk or unsolicited mail sent through the relay against Google's policy.
How to fix it
- 01Find what sent the mail, using Email Log Search and your relay logs.
- 02Secure compromised accounts or devices: reset passwords, revoke app access and remove malware.
- 03Move legitimate bulk mail to a dedicated sending service.
- 04Read Google's SMTP relay spam policy, and contact Google Workspace support if you need the suspension reviewed.
Sources
What this page rests on, checked on 20 Oct 2026. The explanation is ours; the reply text is the server's.
- Gmail SMTP errors and codes (Google Workspace Admin Help)knowledge.workspace.google.com
Related codes
- 550 5.7.0Relay denied: sender not registered.Google's SMTP relay refused your mail because it comes from an IP or domain that is not registered in your Google Workspace account's relay settings.
- 550Mailbox unavailable.The receiving server permanently refused the message for this recipient: the mailbox does not exist, cannot be reached, or the server rejected the message by policy.
- 5.7.0Security or policy refusal, unspecified.The message or session was refused for a security or policy reason that the server did not describe more precisely, or chose not to reveal.
5.7.0 at other providers
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