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тАО08-28-2001 01:58 PM
тАО08-28-2001 01:58 PM
cant send external email...
DLmydomain.com
DWmydomain.com
DS10.2.9.27 (the ip of the mailserver).
My internal emails (to mydomain) come through ok. Mail to name@otherdomain messages do not. When I do a sendmail -bv name@otherdomain, it shows that the mail is deliverable, through the groupwise mail server (relaying for my server is enabled on groupwise). When I send the message, it is returned with:
550 sender domain not found in DNS.
I don't understand WHO'S DNS cannot resolve my domain. We do a ping from anywhere in our domain, and the email server, and they resolve my server correctly.
Our groupwise admin says its a unix problem.
Can anyone give me some help?
Is this my problem or his problem?
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тАО08-28-2001 05:32 PM
тАО08-28-2001 05:32 PM
Re: cant send external email...
is one of theese servers on a private network and one on a public network? Or both on a private network ? Are both unix boxes or are you trying to go from windows to unix or vice versa?
Richard
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тАО08-28-2001 06:57 PM
тАО08-28-2001 06:57 PM
Re: cant send external email...
like your_self@yourdomain.com and see if you are able to receive the mail.
-Sri
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тАО08-28-2001 08:14 PM
тАО08-28-2001 08:14 PM
Re: cant send external email...
and your DNS have to be able to resolve to the receiver domain.
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тАО08-29-2001 06:30 AM
тАО08-29-2001 06:30 AM
Re: cant send external email...
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тАО08-29-2001 06:33 AM
тАО08-29-2001 06:33 AM
Re: cant send external email...
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тАО08-29-2001 06:59 AM
тАО08-29-2001 06:59 AM
Re: cant send external email...
550 sender domain not found in DNS.
I don't understand WHO'S DNS cannot resolve my domain. We do a ping from anywhere in our domain, and the email server, and they resolve my server correctly.
Our groupwise admin says its a unix problem.
Can anyone give me some help?
Is this my problem or his problem?
If you're using a private network inside your firewall (10.0.0.0/8) and you're connecting to external public mail servers, you should be getting NAT'd. Therefore, two things must happen for modern remote sendmail servers to accept your mail:
1) the external public IP address (the other side of the NAT) must be resolvable by external DNS servers.
2) your from address (joe@domain.com) must be resolvable in DNS. If you're using something like joe@internal.domain.com where the internal domain is only visible on the private network, external sendmail servers will probably reject your e-mail. To test for this problem, test an e-mail by doing something like
cat .profile | mailx -s "test e-mail" -f you@domain.com where domain.com can be resolved in DNS. If that's your problem, look at the DM macro, and set it to domain name that's resolvable in DNS.
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тАО08-31-2001 09:51 AM
тАО08-31-2001 09:51 AM