The original message was received at Wed, 29 Jan 2025 11:33:52 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 554 5.7.1 Spam message rejected) (reason: 554 5.7.1 Service unavailable; Sender address [i0rt2@scatterteam.com] blocked using multi.surbl.org;...surbl.org/lists.html, servertime=Jan 29 11:36:24, server=maildomain.datevnet.de, client=83.138.65.30) (reason: 550 5.4.1 Recipient address rejected: Access denied. [DB5PEPF00014B92.eurprd02.prod.outlook.com 2025-01-29T10:36:39.607Z 08DD3F6995C1861B]) (reason: 554 5.7.1 Service unavailable; Sender address [i0rt2@scatterteam.com] blocked using multi.surbl.org;...surbl.org/lists.html, servertime=Jan 29 11:36:53, server=maildomain.datevnet.de, client=83.138.65.30) (reason: 550 Host unknown) (reason: 550 5.1.1 : Recipient address rejected: User unknown in virtual alias table) (reason: 550-5.1.1 user unknown) (reason: 554 Email rejected due to security policies - https://community.mimecast.com/docs/DOC-1369#554 [CFRytZ8BO3SYUxKmSbfYlw.uk45]) ----- Transcript of session follows ----- ... Deferred: Connection refused by augenaerztin-pinneberg.de. ... while talking to mail.bymarc.de.: >>> DATA >> DATA >> DATA ... User unknown >> DATA ... Host unknown (Name server: dreessendoc.com: host not found) ... while talking to w01f337c.kasserver.com.: >>> DATA : Recipient address rejected: User unknown in virtual alias table 550 5.1.1 ... User unknown >> RCPT To: ... User unknown ... while talking to eu-smtp-inbound-1.mimecast.com.: >>> DATA >> MAIL From: SIZE=2828 ... Deferred: 421 4.7.0 [TSS04] Messages from 83.138.65.30 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes