Thomas Marko wrote:
Hi!
5.) Host *name1* claimed to be *name2* In the HELO message of an SMTP conversation the remote host *name1* specified its canonical name as *name2*, and the two did not match. This mostly is due to a misconfigured dns or an attempt to spoof the local sendmail.
I have this problem too. But I do not work with a local DNS. I set up my hosts-file correctly, but I always get this Authentification warning. Have I to tell sendmail to use the hosts-file additional to DNS? I think you can see this error message in this emails header. I think there should something like that be written:
X-Authentication-Warning: everest.berge.dhs.org: Host [192.168.0.50] claimed to be asterix
In my hosts-file is written:
213.47.126.245 everest.berge.dhs.org everest 192.168.0.50 asterix.berge.dhs.org asterix
So asterix should be 192.168.0.50 and this is correct. I also get this message when somebody outside sends a mail to a local user:
X-Authentication-Warning: everest.berge.dhs.org: Host [202.58.118.3] claimed to be lists.suse.com
A nameserver lookup tells me the following:
nslookup 202.58.118.3 Server: ns1.chello.at Address: 195.34.133.10
Name: host1.SuSE.com Address: 202.58.118.3
So I should not get this warning message. Why do I although get it?
I am using SuSE 7.0. When I used SuSE 6.3 I never had this problem.
Has somebody any ideas?
mfg Tom.
-- What this country needs is a good five cent microcomputer.
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Does your "/etc/hosts" file contain an entry for the loopback device?
(this is generally the first entry):
127.0.0.1 localhost
For a DNS client machine using the hosts file in conjunction with
a remote DNS server, your "/etc/host.conf" file should contain:
order hosts,bind
multi on
and, your "/etc/resolv.conf" file should contain:
search berge.dhs.org
nameserver