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SMTP codes

SMTP 252 Cannot verify user

The server cannot verify the user (VRFY) but will accept the message and try to deliver it.

252
Class
2xx · Success
Retried?
Not needed
Defined in
RFC 5321

What to do

How it appears in a bounce

252 Cannot verify user

Paste the full bounce into the decoder — it finds every code and recipient and says what to check.

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