Dear Michael,
Thanks for the info. I will check out in the
moongroup.com site. Let me explain in clearer way as to why i would need
this setup. My redhat6.2 box is the mail-server for my 4.0 subnet users .
Moreover, this machine also acts as the internal DNS server for my 4.0
subnet users. The default gateway of this 6.2 box is a machine called as
web-server . web-server in my office is directly connected to the outside
world. Strictly speaking i don't require this default gateway entry in the
6.2 box, as all of my users browse internet using squid proxy server and
telnet and ftp from 4.0 nodes are not allowed. Now, the problem is that if i
disable default gateway, my sendmail in 6.2 box is not able to do dns lookup
and all the mails meant for outside world stays in the mailq of the 6.2 box.
If i enable the gateway , my sendmail at 6.2 box does the dns lookup and
relays the mail to the 5.2 box. But, DUE TO THE DEFAULT GATEWAY ENTRY , FTP
CONNECTION TO MY INTERNAL NETWORK TAKES EITHER VERY LONG TIME TO INTIATE OR
IT NOT AT ALL OPENS FTP CONNECTION.
Any clues how to solve this problem. Since i am a novice user of linux, i
don' t know how to enable the option in sendmail to not to do dns lookup
from the relaying host. i tried accessing moogroup, but did not find any
constructive help.
Please help me out
Thanks
K.Deepak
Michael Burger wrote:
> First, the help. Check out www.moongroup.com, and look at their
> archives for the mailhelp list. Lots of good info there, and if you
> can't find the answer you need, you can join the mailhelp list and
> ask there.
>
> Second, the question; Does it really matter? DNS lookups don't
> usually take more than a second. It doesn't seem, to me, that it's
> really that big of an issue.
>
> On Sun, 11 Mar 2001 12:30:24 +0530, K.Deepak wrote:
>
> >Dear All,
> >
> > I am having a mail-server running sendmail-8.9.3-20 on
> >RedHat 6.2 box. Around 100 users are connected to his machine. Actually
> >the sendmail in this machine is of relaying type and it relays all the
> >mails to another mail-server running sendmail-8.8.7-20 on RedHat 5.2
> >box. Now, this redhat 5.2 box is connected to the external world all the
> >outgoing are sent from here.
> >
> >I am facing a peculiar problem here. Whenever a outgoing mail is
> >received by the 6.2 box in this setup, it does not blindly forward the
> >mail to the 5.2 box. Rather, it first does a dns lookup to domain to
> >which the mail is meant for. After a successful lookup , it sends the
> >mail to 5.2 box.
> >
> >My question is that - "is there any way in my sendmail of 6.2 box to
> >mention that do not do the dns lookup and blindly forward all the mails
> >to 5.2 box . Let the dns lookup happen in 5.2 box. "
> >
> >
> >I need this very urgently.
> >
> >Please help me out
> >
> >Thanks in advance
> >
> >with warm regards
> >K.Deepak
> >
> >
> >
> >
> >
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> >
>
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