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.