<p><br>
On Jun 7, 2012 6:02 PM, "Al Cooper" <<a href="mailto:cooper@hmcnetworks.com">cooper@hmcnetworks.com</a>> wrote:<br>
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> Hi All,<br>
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> <br>
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> A few weeks ago my server’s emails sent from the postmaster user started to bounce with the following error message:<br>
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> <br>
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> The following addresses had permanent fatal errors ----- <user>@<a href="http://domain.com">domain.com</a><br>
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> (reason: 553 5.1.8 <<a href="mailto:root@server.domain.com">root@server.domain.com</a>>... Domain of sender address <a href="mailto:root@server.doman.com">root@server.doman.com</a> does not exist)<br>
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> (expanded from: <<a href="mailto:root@server.domain.com">root@server.domain.com</a>>)<br>
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> <br>
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> It appears that my email is being blocked because there are not DNS records for the sub-domain <a href="http://server.domain.com">server.domain.com</a>.<br>
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> <br>
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> If this is correct how do I change the postmaster sender address from <a href="http://server.domain.com">server.domain.com</a> to <a href="http://domain.com">domain.com</a>?<br>
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> <br>
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> Or is there a better solution?<br>
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> <br>
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> Thanks for your help,<br>
></p>
<p>Sendmail / Postfix / ?</p>
<p>Chris</p>