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Sean Doolan
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Sbs 2011 Bounce back

Hi,
I am currently using SBS2011 Windows Server Std. i am using exchange to send out e-mails i have started getting bounce backs for some of my e-mails , only a couple of e-mail address not them all. I have changed the outgoing mail server on exchange to dns and tested no joy then mail1.eircom.net still no joy. i have attachted bounce back message below.
Can anybody help me out with this ?
1st-Bounce-Back.docx
2nd-Bounce-Back.docx
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Sean Doolan

8/22/2022 - Mon
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Sean Doolan

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Sean Doolan

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it was what was the cause and also the fix
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