troubleshooting Question

sendmail fails to recognize Internet host names

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sara_bellumFlag for United States of America asked on
Email Protocols
10 Comments4 Solutions3271 ViewsLast Modified:
sendmail on RHESv4 only works for users on mydomain.com - the program cannot send or receive mail from Internet hosts.  The maillog error reads:
sendmail[9447]: l1QLfsAV009447: <user@gmail.com>... Unrecognized host name gmail.com (the same error is repeated for yahoo etc addresses).
I'm working with a recently installed version of RHESv4, with the following packages installed:
sendmail-8.13.1-3.RHEL4.5
sendmail-cf-8.13.1-3.RHEL4.5
cyrus-sasl-2.1.19-5.EL4
cyrus-sasl-md5-2.1.19-5.EL4
cyrus-sasl-gssapi-2.1.19-5.EL4
cyrus-sasl-plain-2.1.19-5.EL4
cyrus-imapd-2.2.12-3.RHEL4.1
cyrus-imapd-utils-2.2.12-3.RHEL4.1
cyrus-sasl-ntlm-2.1.19-5.EL4
cyrus-sasl-sql-2.1.19-5.EL4
My DNS server appears to be working correctly, with the expected dig and nslookup responses, and a pass (with a couple of unavoidable warnings) at dnsreport.com.
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