Email provider · 5.x.x permanent failure
Every SMTP 554 response on record from Free, with the verbatim text, the enhanced status code, a severity rating and a plain-English fix.
The transaction failed with no more specific reason offered. In practice the receiver is saying the message is unwanted: a spam verdict, a blocklisted IP, or a policy rejection. The accompanying text is where the detail is.
smtp;554 5.2.2 <[email protected]>: Recipient address rejected: Quota exceeded (mailbox for user is full)
The recipient's mailbox is full or over its storage limit. There is nothing to fix on the sending side; delivery may succeed later once they clear space.
Provider documentation
Postmaster & documentation
The transaction failed with no more specific reason offered. In practice the receiver is saying the message is unwanted: a spam verdict, a blocklisted IP, or a policy rejection. The accompanying text is where the detail is. At Free, it is a permanent rejection, and the specific reason is in the enhanced status code and message text of each response below.
Match your bounce text to one of the responses below and follow its guidance. Recipient-side wording means fix the address. Authentication or reputation wording (SPF, DKIM, DMARC, blocklist) means fix your sending setup, and check Free's postmaster documentation.
