I solved. The buffer sended is the buffer that the descriminator define. Thanls Pepe Caballero wrote:

I am trying to send specifing error generated for some hours of day. So I decided to extends some class

1. First i implements Evaluator do decide when to send de email. It works correctly. 2. Second, i implement Discriminator interface to generate 2 buffers, One for the messaged generated on the hours that must not sended and another one for the messaged that must be sended by email.

My problems is how SMTPAppender decide what buffer must be sended. Always looks to be sended the first called.

¿any idea?

Thanks too much

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