<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Nov 17, 2014 at 6:18 PM, David Beveridge <span dir="ltr"><<a href="mailto:dave@bevhost.com" target="_blank">dave@bevhost.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">And for the record, yes, the EHLO header was <a href="http://mycompany.com.au" target="_blank">mycompany.com.au</a> and it<br>
does have a normal A record.<br></blockquote><div><br></div><div>In that case, whilst your provider isn't correct - it's probably a good idea to listen to them.</div><div><br></div><div>Having an email server with the hostname <a href="http://example.com">example.com</a> is legal, and in that case you would want to PTR record to go to the same hostname - but it's a really bad idea.</div><div><br></div><div>Like it or not, <a href="http://example.com">example.com</a> has become synonymous with <a href="http://www.example.com">www.example.com</a>, so the expectation is that you'll have a web server running on <a href="http://example.com">example.com</a>.</div><div><br></div><div>Now, perhaps your web server is on the same IP as your email server (or perhaps you don't have a web server today?!) - but why lock yourself into a naming scheme when there's no need to do so. Having <a href="http://example.com">example.com</a> and <a href="http://mail.example.com">mail.example.com</a> (or even <a href="http://fred.example.com">fred.example.com</a> if you don't like using generic names) on the same IP might sound like a little bit more work today, but the day that you decide to move your webserver somewhere else you're going to appreciate having done it that way.</div><div><br></div><div> Scott</div><div><br></div></div></div></div>