The SmarterMail logs will identify this issue. Either the SMTP or Delivery Log.

You need TO, FROM, and DATE/TIME of an attempt.

Thank you for taking the time to respond. The problem is that the only way I know I knew I was not receiving e-mails was when someone contacted me by another means to ask why I had not responded. As such I will not have the copy of any e-mails as they didn't arrive.

In my message I mentioned I had deleted ALL blocked e-mail addresses and was asking if that was enough to ensure that e-mails would arrive if previously blocked by that method.

I suppose I am also concerned that there might be another issue but since my e-mails are still coming in as usual each day, I am assuming that the issue is solved by the above and all I can do is wait until I receive an e-mail from someone who I know was originally blocked. What worried me that of the 3 or 4 whose e-mails I had not received only 1 was on the blocked list.

Ian