The original message was received at Wed, 29 Jan 2025 11:35:26 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 554 5.7.0 Reject, id=4064423-11 - spam) (reason: 554 5.7.1 Service unavailable; Sender address [ezilkannan@kabarr.com] blocked using multi.surbl.org;...l.org/lists.html, servertime=Jan 29 11:37:37, server=mailin11.prod.datevnet.com, client=83.138.65.30) (reason: 554 5.7.1 Service unavailable; Sender address [ezilkannan@kabarr.com] blocked using multi.surbl.org;...l.org/lists.html, servertime=Jan 29 11:37:45, server=mailin11.prod.datevnet.com, client=83.138.65.30) (reason: 550 5.7.1 Blocked by SpamAssassin) (reason: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.) (reason: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.) (reason: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.) (reason: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.) (reason: 550 Host unknown) (reason: 554 5.7.0 Reject, id=2178044-18 - spam, servertime=Jan 29 11:39:38, server=maildomain.datevnet.de, client=83.138.65.30) (reason: 554 5.7.1 Service unavailable; Sender address [ezilkannan@kabarr.com] blocked using multi.surbl.org;...l.org/lists.html, servertime=Jan 29 11:39:42, server=mailin11.prod.datevnet.com, client=83.138.65.30) (reason: 550 #5.1.0 Address rejected.) (reason: 550-Requested action not taken: mailbox unavailable) ----- Transcript of session follows ----- ... while talking to server57.hosting-profi.de.: >>> DATA >> DATA >> DATA >> DATA >> DATA >> DATA >> DATA ... Deferred: 451 qq trouble in home directory (#4.3.0) 550 5.1.2 ... Host unknown (Name server: nanagraf.de: host not found) ... while talking to mail.klinikumevb.de.: >>> DATA >> DATA >> DATA ... Deferred: 450 4.1.0 Don't use the Backup MX 'relay.rzone.de' while the Primary MX is available - please send your mail to mail.klinikumevb.de [217.27.196.25:25] >> DATA >> DATA >> RCPT To: ... User unknown >>> DATA >> RCPT To: ... User unknown