I have two smtp servers that sit behind alteon load balancers which perform health checks every 5 seconds to make sure the servers are up.
but these health checks are causing a lot of messages like this to appear in the log files
2007-11-14 12:18:17 SMTP protocol violation: synchronization error (input sent without waiting for greeting): rejected connection from H=[212.57.34.221]
2007-11-14 12:18:22 SMTP protocol violation: synchronization error (input sent without waiting for greeting): rejected connection from H=[212.57.34.220]
2007-11-14 12:18:23 SMTP protocol violation: synchronization error (input sent without waiting for greeting): rejected connection from H=[212.57.34.221]
2007-11-14 12:18:28 SMTP protocol violation: synchronization error (input sent without waiting for greeting): rejected connection from H=[212.57.34.220]
what is the best way to avoid such messages?
do i need to increase the health check period on the load balancers to 30 seconds instead of 5?
thanks,
Oliver
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Oliver Howe
Senior Systems Administrator
Tel: +44 (0) 79 7420 6484
Fax: +44 (0) 20 7664 7878
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