Dear Robert,
Perhaps you have some zombie clients or s.th. similar. If so, you'll find them using:
thanks for the answer. You were right about the zombie processes. Now, the options are "working". However, since my main concern is mail through SMTP I come back to visit the list. Once Apache took into account the new options, I tried to generate a new mail. I created a new user and simulated that I forgot my password, so in the main screen provided by index.pl I selected the "forgot password" option. The result has been a HTTP 500 code and the following line in the Apache's log: [error] Can't locate object method "auth" via package "Net::SMTP" at ../..//Kernel/System/Email/SMTP.pm line 103. I'm afraid this points to some misconfiguration or lack of packages / software. Can you help me? Thanks alot. Jose.