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Exchange 2007 452 4.3.1 Insufficient system resources SMTP error

Built an Exchange 2007 test environment today and migrated some users from an Exchange 2003 server. Message flow stopped between the two servers. When I looked at the 2003 server I could see the connection agreement that had been created and messages were sat in the queue. If I telneted to the 2007 on port 25 I got the following error. 452 4.3.1 Insufficient system resources SMTP error. I had the server in a VM and at first thought it must need some more RAM but after that didnt solve it I did some more digging and it appears you need at least 4GB of free space on the drive with the SMTP queue. I gave it some more space and this resolved the problem

Posted by Jon Warburton on January 15, 2007 12:15 PM |

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Comments

I had the same problem.
it happened to be on the side of my provider.

Posted by: handy | June 1, 2009 09:26 PM

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