Recently I changed the A records from my isp (and so pop3 mailboxes) to my fixed IP of our organisation exchange server.
Everything looks fine until, for a reason i don’t understand, i received to some sent e-mails (not all e-mails) the following error message:
[email protected]‘ on 01/12/2006 11:33
You do not have permission to send to this recipient. For assistance, contact your system administrator. … Sender IP must resolve>
What did i do wrong?
Thank you all in advance for your answers.
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