Thanks Valdis -- I thought that it might have been something to do with where the error codes were appearing. Thanks, Jim -----Original Message----- From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Valdis Kletnieks Sent: Monday, April 10, 2006 4:19 PM To: [log in to unmask] Subject: Re: BOUNCE vs. SOFTBOUNCE?? On Mon, 10 Apr 2006 16:08:15 EDT, "Gartner, James" said: > The unknown user errors are strange: > SOFTBOUNCE [log in to unmask] 5.0.0 550 5.1.1 <[log in to unmask]>... User > unknown > SOFTBOUNCE [log in to unmask] 5.0.0 550 5.1.1 <[log in to unmask]>... User unknown The 5.0.0 is an "unspecified" error, and Listserv is probably erring on the side of caution - if the box at the other end is confused regarding the nature of the error, it may well decide there isn't an error when you retry. ;) > BOUNCE [log in to unmask] 5.1.1 Mailer mail02.COLOHFA.ORG said: "550 > 5.1.1 User unknown" RFC3463 is pretty specific about 5.1.1 however: X.1.1 Bad destination mailbox address The mailbox specified in the address does not exist. For Internet mail names, this means the address portion to the left of the "@" sign is invalid. This code is only useful for permanent failures. (Note that your 2 softbounces contain 5.1.1, but in a *later* field. It's the 5.0.0 that matters....) ----------------------------------------- The information contained in this e-mail message, and any attachment thereto, is confidential and may not be disclosed without our express permission. If you are not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution or copying of this message, or any attachment thereto, in whole or in part, is strictly prohibited. If you have received this message in error, please immediately notify us by telephone, fax or e-mail and delete the message and all of its attachments. Thank you. Every effort is made to keep our network free from viruses. You should, however, review this e-mail message, as well as any attachment thereto, for viruses. We take no responsibility and have no liability for any computer virus which may be transferred via this e-mail message.