hey!!! thanks!! that did a great help but i have a small issue pending...
the mails if i send to *[email protected]* are being delivered, but the ones to *[email protected]* are not. why could it be so??? mails being send from my server are being received as * [email protected]*. how do i change it to *[email protected]*?? where do i define my domain??? On Sun, May 31, 2009 at 9:25 AM, Jeremiah Bess <[email protected]>wrote: > I'm not an exchange guy, so I can't help much in that area. Is there any > reason why you have to use the exchange server as a relay? > > Jeremiah E. Bess > Network Ninja, Penguin Geek, Father of four > > > On Sat, May 30, 2009 at 21:28, Jibz <[email protected]> wrote: > >> Is there any way i can tell my mail server to not to deny that IP? Can i >> change the configuration not to check for relay? >> >> On Sun, May 31, 2009 at 2:48 AM, Jeremiah Bess >> <[email protected]>wrote: >> >>> This is because your internet address does not reverse map to the DNS >>> domain you are sending from. You need to set your external DNS to use your >>> NATed address, or use a dynamic DNS hosting service like dnydns or >>> no-ip.com. >>> >>> Basically, when you go to iptools.com and do a MX lookup for >>> yourdomain.com, it should show the internet address of your ISP modem. >>> Additionally, your IP should reverse map to yourdomain.com. >>> >>> Jeremiah E. Bess >>> Network Ninja, Penguin Geek, Father of four >>> >>> >>> >>> On Sat, May 30, 2009 at 12:10, Jibz <[email protected]> wrote: >>> >>>> I have setup a mail server on CentOS 5 >>>> >>>> >>>> sendmail-8.13 >>>> >>>> I'm able to sent and receive mails from yahoo and gmail. >>>> I've another microsoft exchange server on the same network. Mails sent >>>> from that server to my mail server gets bounced. >>>> >>>> I got this error in /var/log/mail >>>> >>>> *May 30 22:11:24 myhostname sendmail[31981]: n4UGfO5L031981: >>>> ruleset=check_rcpt, arg1=<[email protected]>, relay= >>>> mx1.exchangeserver.com[public IP of exchange server] (may be forged), >>>> reject=550 5.7.1 <[email protected]>... Relaying denied. IP name >>>> possibly forged [public IP of exchange server] >>>> >>>> May 30 22:11:24 myhostname sendmail[31981]: n4UGfO5L031981: >>>> from=<usern...@exchangeserver>, size=0, class=0, nrcpts=0, proto=SMTP, >>>> daemon=MTA, relay=mx1.exchangeserver.com [public IP of exchange server] >>>> (may be forged)* >>>> >>>> As the exchange server is in my network if you do a lookup for the >>>> domain name of that server you will get the local IP only. >>>> >>>> So i changed the entry of my /etc/hosts file >>>> >>>> and added >>>> >>>> <PUBLIC IP> <exchangeserver.com> >>>> >>>> Now still the mails bounces but a different error >>>> >>>> *May 30 22:42:10 myhostname sendmail[32645]: n4UHCASl032645: >>>> ruleset=check_rcpt, arg1=<[email protected]>, >>>> relay=mail.exchangeserverom [public IP of exchange server], reject=550 >>>> 5.7.1 >>>> <[email protected]>... Relaying denied >>>> >>>> >>>> May 30 22:42:10 myhostname sendmail[32645]: n4UHCASl032645: >>>> from=<usern...@exchangeserver>, size=0, class=0, nrcpts=0, proto=SMTP, >>>> daemon=MTA, relay=mail.exchangeserver[public IP of exchange server]* >>>> >>>> Please help me out!!!! >>>> >>>> >>>> >>>> >>> >>> >>> >> >> >> -- >> "The will of God will never take you where the Grace of God will not >> protect you." >> >> >> >> > > > > -- "The will of God will never take you where the Grace of God will not protect you." --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Linux Users Group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] For more options, visit our group at http://groups.google.com/group/linuxusersgroup -~----------~----~----~----~------~----~------~--~---
