On Mon, May 17, 2010 at 6:08 AM, Jay R. Ashworth <span dir="ltr"><<a href="mailto:jra@baylink.com">jra@baylink.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
No discernable delay on close. So apparently at least *some* Blackberry<br>
incoming MXs are broke. Improperly thinking I'm on a blacklist, and dropping<br>
the connection without telling me why is a valid value for "broke".<br></blockquote><div><br>Yet it does seem that's the kind of "broke" that is occurring. I'm seeing a 100% success rate in connecting from a datacenter IP, and 100% failure rate (with the same symptoms you've described) from a cable modem IP.<br>
<br>I believe the RIM BIS front-end boxes are IronPorts, so checking your IP's SenderBase score would be a good place to start (<a href="http://senderbase.org">http://senderbase.org</a>)<br><br> Scott.<br><br></div></div>