The original message was received at Sat, 15 Feb 2025 23:32:09 -0500 from [10.30.65.107] *** ATTENTION *** This email is being returned to you because the remote server would not or could not accept the message. The registeredsite servers are just reporting to you what happened and are not the source of the problem. The address which was undeliverable is in the section labeled: "----- The following addresses had permanent fatal errors -----". The reason your mail is being returned to you is in the section labeled: "----- Transcript of Session Follows -----". This section describes the specific reason your e-mail could not be delivered. Please direct further questions regarding this message to your e-mail administrator. --Registeredsite Postmaster ----- The following addresses had permanent fatal errors ----- (reason: 550 5.7.1 Connection refused - [209.17.115.107] blocked by Spamhaus SBL - https://check.spamhaus.org...ry=209.17.115.107 - OXSUS001_111 - https://postmaster-oxsus.vadesecure.com/inbound_error_codes/#_111) (reason: 550 5.7.1 Connection refused - [209.17.115.107] blocked by Spamhaus SBL - https://check.spamhaus.org...ry=209.17.115.107 - OXSUS001_111 - https://postmaster-oxsus.vadesecure.com/inbound_error_codes/#_111) ----- Transcript of session follows ----- ... while talking to mx004.netsol.xion.oxcs.net.: