Also I tried to do nslookup from your DNS server server01.cig.co.ae and your server can't resolve sun.com. > server server01.cig.co.ae Default Server: server01.cig.co.ae Address: 172.16.1.11 > set ty=mx > sun.com Server: server01.cig.co.ae Address: 172.16.1.11 > > *** server01.cig.co.ae can't find sun.com: No response from server -----Original Message----- From: Ezzeldin S. Ezzeldin Sent: Tuesday, April 08, 2003 11:43 PM To: [ExchangeList] Subject: [exchangelist] RE: Help please http://www.MSExchange.org/ You have no PTR record for your domain cig.co.ae if that is the domain that you are trying to send from. Sun is using sendmail to deliver mail and sendmail reject any unresolved domain name or domain without PTR record. How I am searching: Searching for PTR record for cig.co.ae at a.root-servers.net: Got referral to NS2.UAENIC.ae. [took 51 ms] Searching for PTR record for cig.co.ae at NS2.UAENIC.ae.: Got referral to ns3.emirates.net.ae. [took 312 ms] Searching for PTR record for cig.co.ae at ns3.emirates.net.ae.: Reports that no PTR records exist. [took 281 ms] Answer: No PTR records exist for cig.co.ae. [Neg TTL=3600 seconds] Details: ns3.emirates.net.ae. (an authoritative nameserver for cig.co.ae.) says that there are no PTR records for cig.co.ae. The E-mail address in charge of the cig.co.ae. zone is: administrator@xxxxxxxxxx Thanks, Ezzeldin -----Original Message----- From: Zafar Pravaiz - CIG [mailto:Zafar.Pravaiz@xxxxxxxxx] Sent: Tuesday, April 08, 2003 1:11 AM To: [ExchangeList] Subject: [exchangelist] RE: Help please http://www.MSExchange.org/ No response for this. Please help Thanks Zafar -----Original Message----- From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] Sent: Monday, April 07, 2003 10:07 AM To: [ExchangeList] Subject: [exchangelist] RE: Help please http://www.MSExchange.org/ Check your DNS servers. John Tolmachoff MCSE, CSSA Owner, Network Engineer/Consultant eServices For You City of Industry, CA www.eservicesforyou.com > -----Original Message----- > From: Zafar Pravaiz [mailto:zafar.pravaiz@xxxxxxxxx] > Sent: Sunday, April 06, 2003 10:44 PM > To: [ExchangeList] > Subject: [exchangelist] Help please > > http://www.MSExchange.org/ > > Hi all > > I m using Exchange 5.5 with sp4. its working fine but when i m send a mail > to a specific domian i m getting NDR > > The following recipient(s) could not be reached: > 550 no MX- or A-record > > The domain is sun.com , i guess there should not be any problem. plz > suggest me the cause > > Thanks > zafar > > Free Anti-Spam Download: Try Multi-layered, Accurate Spam Filtering with > SurfControl E-mail Filter > http://www.surfcontrol.com/go/zmsexdl1 > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > ISA Server Resource Site: http://www.isaserver.org > Windows Security Resource Site: http://www.windowsecurity.com/ > Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: > johnlist@xxxxxxxxxxxxxxxxxxx > To unsubscribe send a blank email to leave-exchangelist- > 1440469J@xxxxxxxxxxxxx Free Anti-Spam Download: Try Multi-layered, Accurate Spam Filtering with SurfControl E-mail Filter http://www.surfcontrol.com/go/zmsexdl1 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: zafar.pravaiz@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') Disclaimer: Information contained in this e-mail and in any of its attached files, including replies and forwarded copies, is confidential and intended solely for the addressee(s) and may be legally privileged or prohibited from disclosure and unauthorized use. 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Free Anti-Spam Download: Try Multi-layered, Accurate Spam Filtering with SurfControl E-mail Filter http://www.surfcontrol.com/go/zmsexdl1 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: esezzeld@xxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: esezzeld@xxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')