Two 'brilliants' and zero Guinness makes Scharff a sad boy. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Kennedy, Jim > Posted At: Wednesday, February 16, 2005 12:16 PM > Posted To: swynk > Conversation: Exhange 2003 and 550's > Subject: RE: Exhange 2003 and 550's > > > > Two brilliants in one day. That is the answer, issue the 5XX > after rcpt to. I am fine tuning our spam filter and want to > get rid of the bazzillion retries from blocked hosts. Thanks much. > > JK > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Chris Scharff > > Sent: Wednesday, February 16, 2005 1:04 PM > > To: Exchange Discussions > > Subject: RE: Exhange 2003 and 550's > > > > EHLO or HELO is the required first command sequence. If the > receiving > > MTA issued a 550 response to the RCPT TO commands instead, Exchange > > would exhibit the behavior you desire. > > > > A new RFC seems excessive when a more intelligent functional > > implementation would achieve the objective. > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On > Behalf Of > > > Kennedy, Jim Posted At: Wednesday, February 16, 2005 11:28 > > AM Posted > > > To: swynk > > > Conversation: Exhange 2003 and 550's > > > Subject: RE: Exhange 2003 and 550's > > > > > > > > > > > > Dunno on this one. It just does not feel right. > > > > > > "The SMTP client is discouraged from repeating the exact > > request (in > > > the same sequence)." > > > > > > In this case, the sending blacklisted server is acting as > > the client. > > > And right now it is repeating the exact request, and will > > do so for 48 > > > hours. I realize discouraged does not mean give up. > > > I think it's time for a new RFC that has a provision for > a specific > > > code that say 'Go away, do not retry'. > > > > > > > -----Original Message----- > > > > From: [EMAIL PROTECTED] > > > > [mailto:[EMAIL PROTECTED] On > > > Behalf Of Ed > > > > Crowley [MVP] > > > > Sent: Wednesday, February 16, 2005 12:13 PM > > > > To: Exchange Discussions > > > > Subject: RE: Exhange 2003 and 550's > > > > > > > > RFC 2821 says: > > > > > > > > 5yz Permanent Negative Completion reply > > > > The command was not accepted and the requested > > action did not > > > > occur. The SMTP client is discouraged from repeating > > > the exact > > > > request (in the same sequence). Even some > "permanent" error > > > > conditions can be corrected, so the human user > may want to > > > > direct > > > > the SMTP client to reinitiate the command > sequence by direct > > > > action at some point in the future (e.g., after the > > > spelling has > > > > been changed, or the user has altered the account > status). > > > > > > > > So, I would characterize Exchange's handling of this > response as > > > > appropriate. > > > > > > > > Ed Crowley MCSE+Internet MVP > > > > Freelance E-Mail Philosopher > > > > Protecting the world from PSTs and Bricked Backups!T > > > > > > > > -----Original Message----- > > > > From: [EMAIL PROTECTED] > > > > [mailto:[EMAIL PROTECTED] On > Behalf Of > > > > Kennedy, Jim > > > > Sent: Wednesday, February 16, 2005 6:34 AM > > > > To: Exchange Discussions > > > > Subject: Exhange 2003 and 550's > > > > > > > > > > > > Ok, I had the sinking feeling that Exchange still does not > > > handle 5XX > > > > errors properly. So today I tested and confirmed. > > > > Hoping I messed something up. > > > > > > > > I blacklisted my home email server at work. Home is > also Exchange > > > > 2003. > > > > Sent a message to our work server, it was rejected with a > > > 550. But my > > > > home server is still retrying to send it, has been for > > > awhile now. I > > > > telneted into the work/receiving server from my > blacklisted home > > > > server. > > > > As soon as I helo'd I got a 550. > > > > > > > > Isn't a 550 a fatal, and shouldn't Exchange stop trying > > > upon the first > > > > failure and return the NDR? > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > > To subscribe: > http://e-newsletters.internet.com/discussionlists.html/ > > To unsubscribe send a blank email to > > [EMAIL PROTECTED] > > Exchange List admin: [EMAIL PROTECTED] > > To unsubscribe via postal mail, please contact us at: > > Jupitermedia Corp. > > Attn: Discussion List Management > > 475 Park Avenue South > > New York, NY 10016 > > > > Please include the email address which you have been contacted with. > > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > To subscribe: http://e-newsletters.internet.com/discussionlists.html/ > To unsubscribe send a blank email to > [EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. > > >
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