Archives August 30, 2006

Troubleshooting 421 4.0.0 error

Hi, I hope this may be useful to someone. I have just spent a couple of hours troubleshooting the above error message which was occuring when we sent mail to our company banker. I appears that others are having similar problems see the thread here: http://lists.roaringpenguin.com/pipermail/mimedefang/2005-May/026854.html Anyhow, I thought I would list my troubleshooting steps.…

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