RE: Unable to send to domain Cytec.com

[Sethi, Ali]

Title: Message

Excellent   Thanks Bruce.       -----Original Message----- From: Bruce Fyfe [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 1:39 PM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com   Here is the nslookup for mx records for their domain:   cytec.com       MX preference = 10, mail exchanger = mail.cytec.com cytec.com       nameserver = w2wnj-dns1.wave2wave.com cytec.com       nameserver = w2wnj-dns2.wave2wave.com mail.cytec.com  internet address = 209.178.204.121 w2wnj-dns1.wave2wave.com        internet address = 209.178.200.2 w2wnj-dns2.wave2wave.com        internet address = 209.178.200.4   My guess is that your mail server is not trying the alternate mail servers.  This is a known issue with 5.5 and 2000.  I had the same problem on 2000 and it was resolved by removing the DNS entries in teh SMTP virtual server on the Exchange box.  This is suppose to be fixed in SP3 according to MSPS.  I remember while researching this issue that there was a similar issue with exchange 5.5.  I did a search of the KB using "multiple mx records" under Exchange topics and found quite a few articles.  Here are two that apply to Exchange 4/5:   Q169781 Q152165     Bruce Fyfe, Network Engineer Lakeside Industries (www.lakesideind.com) (425) 313-2600   -----Original Message----- From: Sethi, Ali [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 8:43 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com Yeah I agree.    -----Original Message----- From: Jim Sullivan [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 11:28 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com   You probably can not ping (ICMP) through their firewall.  Most likely they have a firewall redirecting specific traffic to internal systems.    -----Original Message----- From: Sethi, Ali [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 11:29 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com I cant even ping www.cytec.com  I can go to the website but cannot ping it by IP.  They probably have it setup that way.   -----Original Message----- From: Sethi, Ali [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 11:25 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com   Actually I tried pinging mail.cytec.com and could not.  It gave me an ip address and I couldn't ping that either.    -----Original Message----- From: Nickolaos Fotopoulos [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 10:37 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com   can they send you mail?  I had a problem like this resently that was effecting our ability to send/recieve to 66.33.*.* addresses.  Can you ping, or tracert the address?  My problem affected all network traffic to this address range though.   Nick -----Original Message----- From: Precht, David [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 05, 2002 7:58 AM To: MS-Exchange Admin Issues Subject: RE: Unable to send to domain Cytec.com could it be blacklisted? -----Original Message----- From: Sethi, Ali [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 04, 2002 18:04 To: MS-Exchange Admin Issues Subject: Unable to send to domain Cytec.com Hi,   Users in our network seem to have problems sending to any email address associated with cytec.com.  Our Exchange 5.5 SP4 server (on Windows 2k SP2) is not setup as a Relay Agent nor does cytec use any type of 3rd party vendor to monitor their email flow.  Also I have checked with their IT guys and they do not have our domain blocked in message filtering.   Below is the undeliverable message we receive when sending to a user on the cytec.com domain.   Your message did not reach some or all of the intended recipients. Subject: FW: Resumes - Data/Telecom - Rene Oxild & Alan Flade Sent: 5/30/2002 8:44 AM The following recipient(s) could not be reached: '[EMAIL PROTECTED]' on 6/1/2002 8:44 AM The recipient name is not recognized The MTS-ID of the original message is: c=US;a= ;p=Raymond Karsan A;l=RKAWA1EX02-020530124345Z-150 MSEXCH:IMS:Raymond Karsan Associates:Wayne 1:RKAWA1EX02 3499 (000B09AA) network error during host resolution   Any suggestions?  Should I contact our ISP that publishes the mx records?   Thanks, List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm