On Wed, Feb 27, 2002 at 09:16:21AM -0800, [EMAIL PROTECTED] wrote: > Hi > > I received the following message from my courier mail server > > **************** Start ******************* > > This is a delivery status notification from switch.kaiserdigital.com, > running the Courier mail server, version 0.36.0. > > The original message was received on Wed, 27 Feb 2002 09:05:59 -0800 > from mouse (mouse.kaiserdigital.com [::ffff:192.168.0.11]) > > ------------------------------------------------------------------------ > --- > > UNDELIVERABLE MAIL > > Your message to the following recipients cannot be delivered: > > <[EMAIL PROTECTED]>: > mx10.hotmail.com [64.4.49.135]: > >>> RSET > <<< 554 Transaction failed > > ------------------------------------------------------------------------ > --- > > If your message was also sent to additional recipients, their delivery > status is not included in this report. You may or may not receive other > delivery status notifications for additional recipients. > > The original message follows as a separate attachment. > > **************** End ******************* > > Why would error "554 Transaction failed" occur?
Courier holds open SMTP connections to remote hosts for up to one minute, so that in case another message arrives for that host within that one minute, it can simply re-use the connection; however, when a new message arrives, courier will send an "RSET" down that connection to reset the server state before it sends the new message. The server should either return a "250", ie. OK response, or some kind of 421 response to say it's temporarily not available. Hotmail's server is unfortunately returning a 554, which means permanent failure, and courier therefore bounces the email :( Courier's behaviour is correct, but it just means that mail will sometimes bounce with certain stupid sites like Hotmail. Should courier be configurable so that we stop it from holding open connections to certain stupid sites? -- Anand Buddhdev _______________________________________________ courier-users mailing list [EMAIL PROTECTED] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
