Transaction log increasing when SMTP started

[murpau]

Hi,

I don't know how to solve this problem, I check if we're relaying, blacklisted, nothing.

The priv1.edb is stable, but I have 18 transactions logs in 1 minute. When I stop smtp, logs are ok.

I have some mails in the queues and 2 domains unreachable!!

I enabled smtp logs in Exchange and I don't have warnings about smtp!!

Thank you

 

[murpau]

It's just to complete the thread, the cpu increase from 2% (SMTP stopped) to 63% (SMTP started).