I have tried DNS failover and can assert is working like charm for SER version 2.0 and further.
Which SER version are you using?

can you check wheter you have compiled SER with DNS failover?
 which is the ouput of
            #ser -V
what is the ouput of
            #dig NAPTR yourdomain.name.com
(replace yourdomain.name.com for the appropriate valie)

regards,
sam.

2007/5/10, Mário Ferreira <mariojvp@gmail.com>:
Hi,

I am interested in using SER DNS failover, but I am getting some problems.

A failure can be a 503 error response, ICMP errors or a timeout due to a not received response.

Does anyone know if SER is able to detect these failures and then select an alternative destination for the message?

If the ICMP errors can't be detected, can this be solved with timers?

I turned on use_dns_cache and use_dns_failover, but when the message fails to be delivered to the first destination,
 SER never tries the second destination, which was configured with DNS SRV.

regards,

Mário Ferreira

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