At 11:58 AM +0300 12/7/01, Technical Support, Stalker Labs imposed structure on a stream of electrons, yielding: >Hello, > >On Fri, Dec 7, 2001, 03:26:42 GMT > 323, <[EMAIL PROTECTED]> wrote: > >>Would SIMS give this kind of error to someone attempting to send mail to one >>of my accounts? Or is it on there end? >> >> >> because: a >> Permanent Error 472 <[EMAIL PROTECTED]> cannot be >> verified now > >472 <[EMAIL PROTECTED]> cannot be verified now > >Yes, if there are problems with resolving the domain name phoenix.gov
Yes, but SIMS would never use the words "Permanent Error" so something else is involved here. In fact a 472 from SIMS (or any other MTA) *NEVER* should be interpreted as a permanent error because (as the SIMS error message that Dmitry quoted implies) this is a problem of 'now' not something eternal or sure. The 472 is what SIMS sends when it gets nothing from DNS when verifying a return-path. When SIMS gets a NXDOMAIN (i.e. an affirmative DNS response that a domain doesn't exist) it will send a 572 instead. IOW: DNS was broken for phoenix.gov, perhaps temporarily, so that SIMS could not get an A or MX record for it. SIMS returned a 472 message to the attempt to send a message claiming to be from <[EMAIL PROTECTED]> which the sending MTA *misread* as a permanent error, bouncing the message as a result. The sending MTA *should* have held the message for a later retry. -- Bill Cole [EMAIL PROTECTED] ############################################################# This message is sent to you because you are subscribed to the mailing list <[EMAIL PROTECTED]>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>
