https://community.talktalk.co.uk/t5/Email/undelivered-email-messages/m-p/3090006#M184356 <P>Hi Vixstix, please send me a personal message with the sending and receiving mail addresses and I'll add you to the list being investigated. Please confirm that you're sending from webmail from 1 email address direct to another with no forwarding.&nbsp;</P> <P>&nbsp;</P> <P>Ady</P> Thu, 09 Jan 2025 14:55:24 GMT Ady-TalkTalk 2025-01-09T14:55:24Z https://community.talktalk.co.uk/t5/Email/undelivered-email-messages/m-p/3089610#M184302 <P><SPAN>mx003.tt.xion.oxcs.net</SPAN><BR /><SPAN>Remote server returned '554 5.5.1 &lt;mx003.tt.xion.oxcs.net #5.5.1 smtp; 550 5.5.1 Recipient rejected - OXSEU012_403 - <A href="https://postmaster-oxseu.vadesecure.com/inbound_error_codes/#_403" target="_blank" rel="noopener">https://postmaster-oxseu.vadesecure.com/inbound_error_codes/#_403</A>&gt;'</SPAN></P><P>&nbsp;</P><P><SPAN>We are getting this error message on undelivered outgoing emails, but the recipients have received our emails. How can we fix this? obviously I don't want to just ignore it.</SPAN></P> Wed, 08 Jan 2025 10:29:30 GMT https://community.talktalk.co.uk/t5/Email/undelivered-email-messages/m-p/3089610#M184302 Vixstix 2025-01-08T10:29:30Z https://community.talktalk.co.uk/t5/Email/undelivered-email-messages/m-p/3090006#M184356 <P>Hi Vixstix, please send me a personal message with the sending and receiving mail addresses and I'll add you to the list being investigated. Please confirm that you're sending from webmail from 1 email address direct to another with no forwarding.&nbsp;</P> <P>&nbsp;</P> <P>Ady</P> Thu, 09 Jan 2025 14:55:24 GMT https://community.talktalk.co.uk/t5/Email/undelivered-email-messages/m-p/3090006#M184356 Ady-TalkTalk 2025-01-09T14:55:24Z