>From a machine other than your linux mail server, type this at a command prompt:
nslookup -type=mx mydomain.com post the results here Jeremiah E. Bess Network Ninja, Penguin Geek, Father of four On Sun, May 31, 2009 at 10:06, Jibz <[email protected]> wrote: > maybe i'm being too foolish..... how do i find that??? > > > On Sun, May 31, 2009 at 9:34 PM, Jeremiah Bess <[email protected]>wrote: > >> The MX record that points to mydomain.com >> >> Jeremiah E. Bess >> Network Ninja, Penguin Geek, Father of four >> >> >> On Sun, May 31, 2009 at 10:03, Jibz <[email protected]> wrote: >> >>> MX record of my linux server or the windows exchange server? >>> >>> >>> On Sun, May 31, 2009 at 9:29 PM, Jeremiah Bess >>> <[email protected]>wrote: >>> >>>> What does your MX record point to? >>>> >>>> Jeremiah E. Bess >>>> Network Ninja, Penguin Geek, Father of four >>>> >>>> >>>> On Sun, May 31, 2009 at 09:56, Jibz <[email protected]> wrote: >>>> >>>>> 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." >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> -- >>> "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 -~----------~----~----~----~------~----~------~--~---
