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Note to Self: Invalid Internet address specified

I saw the following error in my Domino mail logs yesterday; right after a developer told me there was a problem because their e-mail wasn’t getting sent.

06/02/2008 10:52:39 PM Router: Transferring mail to domain GMAIL.COM (host []) via SMTP

06/02/2008 10:52:44 PM Router: Error transferring message 000FCE5B via SMTP to;,;, Invalid Internet address specified.

06/02/2008 10:53:15 PM Router: No messages transferred to GMAIL.COM (host via SMTP

I’ll admit I was skeptical, as no one else was complaining about mail going through, but the application in question was the first one installed on a new server, so I took it at face value.

I ran some tests, tried to send e-mail from the application to a variety of e-mail accounts on different domains to see if it was a re-creatable problem, which it was. I googled “’Invalid Internet address specified’ & domino” to see what I could find, but everything I found related to internal Notes SMTP problems, but all my mail goes directly out to the internet.

I fiddled with various tests last night until I decided to go to bed. This morning at work it hit me. What is the “from” address on the e-mail?

Turns out that most mail servers will reject email coming from “” without anything before the @ sign. I would have spotted that had I thought to check the memo document.

Oh well.


  1. thanks for this,
    happened to me as well as I got no clue why recipient's correct address is considered invalid.

  2. thanks for this,
    happened to me as well as I got no clue why recipient's correct address is considered invalid.


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