Is your e-mail being blocked by Cisco or Ironport devices? Find Out Here

So, your boss is getting all pissed off because she/he is trying forward some lame joke to a golf buddy and they get a bounce message saying that their message was blocked by Ironport. Immediately they get defensive because who is this Ironport and how dare they block your boss’ message!

We all know the reason your server is being blocked probably has to do with your boss using the “reply to all” function and just spammed stupid comments to the 500 other users on said lame email (because God forbid anyone should ever use the bcc for this crap). So 250 of those people listed on the email flagged it as junk or spam.

Since you can’t just up and shake your boss like a british nanny you do the next best thing. SenderBase is the place to check if you are having issues with your email being blocked by IronPort / Cisco devices and the url is http://www.senderbase.org.

It is important to understand that Senderbase is not a block list but is used for reputation checks. Plug in your IP and check your reputation then follow the recommendations to improve your rep which will help with your mail deliverability.