Hello, I have a client running SBS 2000 using exchange 2000 for email. All service packs and patches are up to date. No known issues otherwise. They have like 5 domain names out of possibly thousands they send to that get NDR's that look like this. Your message did not reach some or all of the intended recipients. Subject: ********, ******** & *******, Spring 2005 Sexual Harassment Seminar Sent: 3/23/2005 11:13 AM The following recipient(s) could not be reached: John Doe on 3/23/2005 11:15 AM There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <kemserv.kemlaw.net #5.5.0 smtp;550- (myserver.mydomain.net) [66.252.90.223] is currently not permitted to relay> The IP address is the MX record for my clients domain. It doesnt make any sense to me because they are sending an email not trying to relay. I cant seem to find much in searching on the net either. Any imput would be welcome. Thanks.
Michael Riordan wrote: > Hello, > > I have a client running SBS 2000 using exchange 2000 for > email. All service packs and patches are up to date. No > known issues otherwise. They have like 5 domain names > out of possibly thousands they send to that get NDR's > that look like this. > > Your message did not reach some or all of the intended > recipients. > > Subject: ********, ******** & *******, Spring > 2005 Sexual Harassment Seminar > Sent: 3/23/2005 11:13 AM > > The following recipient(s) could not be reached: > > John Doe on 3/23/2005 11:15 AM > > There was a SMTP communication problem with > the recipient's email server. Please contact your system > administrator. > <kemserv.kemlaw.net #5.5.0 smtp;550- > (myserver.mydomain.net) [66.252.90.223] is currently not > permitted to relay> > > > The IP address is the MX record for my clients domain. > It doesnt make any sense to me because they are sending > an email not trying to relay. I cant seem to find much > in searching on the net either. Any imput would be > welcome. Thanks. That IP doesn't have a PTR/reverse lookup in DNS - mail from your server can easily be blocked/rejected because of this. Ask the ISP (whomever owns that IP) to create one. Ideally, make it match the public name of the server - as in, mail.mydomain.com if possible - although, generally speaking, the mere presence of a PTR is enough to satisfy most servers. Kemlaw.net doesn't exist on the Internet....I suggest you look up the public DNS name for this domain on www.dnsreport.com
Thanks for your thoughts. Kemlaw.net is the internal DNS domain for active directory. They have an external domain which has an MX record set to their ISP WAN address. Then the email forwarded through their fiewall to the exchange box kemlaw.net. Are you saying their internet domain needs a pointer record or the users who they are sending need one? Thanks. >-----Original Message----- >Hello, > >I have a client running SBS 2000 using exchange 2000 for >email. All service packs and patches are up to date. No >known issues otherwise. They have like 5 domain names >out of possibly thousands they send to that get NDR's >that look like this. > >Your message did not reach some or all of the intended >recipients. > > Subject: ********, ******** & *******, Spring >2005 Sexual Harassment Seminar > Sent: 3/23/2005 11:13 AM > >The following recipient(s) could not be reached: > > John Doe on 3/23/2005 11:15 AM > > There was a SMTP communication problem with >the recipient's email server. Please contact your system >administrator. > <kemserv.kemlaw.net #5.5.0 smtp;550- >(myserver.mydomain.net) [66.252.90.223] is currently not >permitted to relay> > > >The IP address is the MX record for my clients domain. >It doesnt make any sense to me because they are sending >an email not trying to relay. I cant seem to find much >in searching on the net either. Any imput would be >welcome. Thanks. >. >
anonymous@discussions.microsoft.com wrote: > Thanks for your thoughts. Kemlaw.net is the internal DNS > domain for active directory. They have an external > domain which has an MX record set to their ISP WAN > address. Then the email forwarded through their fiewall > to the exchange box kemlaw.net. > Are you saying their internet domain needs a pointer > record or the users who they are sending need one? > Thanks. The public IP they use needs to have a reverse-lookup/PTR record in DNS. Whomever owns the IP address/block needs to do that - you can't do it yourself, nor can whomever is hosting thecompany.com public DNS. A good website: www.dnsreport.com - enter the public domain name in there & check it out. > > > > > > > > > > >> -----Original Message----- >> Hello, >> >> I have a client running SBS 2000 using exchange 2000 for >> email. All service packs and patches are up to date. No >> known issues otherwise. They have like 5 domain names >> out of possibly thousands they send to that get NDR's >> that look like this. >> >> Your message did not reach some or all of the intended >> recipients. >> >> Subject: ********, ******** & *******, Spring >> 2005 Sexual Harassment Seminar >> Sent: 3/23/2005 11:13 AM >> >> The following recipient(s) could not be reached: >> >> John Doe on 3/23/2005 11:15 AM >> >> There was a SMTP communication problem with >> the recipient's email server. Please contact your system >> administrator. >> <kemserv.kemlaw.net #5.5.0 smtp;550- >> (myserver.mydomain.net) [66.252.90.223] is currently not >> permitted to relay> >> >> >> The IP address is the MX record for my clients domain. >> It doesnt make any sense to me because they are sending >> an email not trying to relay. I cant seem to find much >> in searching on the net either. Any imput would be >> welcome. Thanks. >> .
