The original message was received at Tue, 25 Jan 2022 12:48:44 +0100 (CET) from mail-lf1-f43.google.com [209.85.167.43] ----- The following addresses had permanent fatal errors ----- (reason: 550-5.1.1 The email account that you tried to reach does not exist. Please try) ----- Transcript of session follows ----- ... while talking to aspmx.l.google.com.:

...

...

DATA <<< 550-5.1.1 The email account that you tried to reach does not exist. Please try <<< 550-5.1.1 double-checking the recipient's email address for typos or <<< 550-5.1.1 unnecessary spaces. Learn more at <<< 550 5.1.1 https://support.google.com/mail/?p=NoSuchUser b7si10228687wrv.219 - gsmtp 550 5.1.1 ... User unknown <<< 503 5.5.1 RCPT first. b7si10228687wrv.219 - gsmtp