Port Bug Report: Remote access failed / Authentication failed

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Andreas Kirchhuebel
Your email address : AKirchhuebel(at)axcent(dot)de

Category : runtime: back-end
Severity : serious

Summary: Remote access failed / Authentication failed

System Configuration
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Operating System : SUSE-Linux 2.0.33

PostgreSQL version : 6.1

Compiler used : gcc

Hardware:
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PentiumII, 64 MB RAM

Versions of other tools:
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Problem Description:
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There are two problems:
1. The postmaster (version 6.1) does not accept the -i option. Why? (We use another Postgres Version 6.3 and there it is done well.)
2. Although the pg_hba.conf is set correctly, I get the message: be_recvauth: unrecognized message type:65536
Failed to authenticate client as Postgres user "andreas" using <unknown authentication type>

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Test Case:
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We have two computers with Linux.
One has got Postgres V6.1 and the other one V6.3.
When I try to access the database on the 6.1-DB with
psql -h hostname dbname
I get the be_recvauth-message.

I cannot start the V6.1 postmaster with the -i option.

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Solution:
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