[Dovecot] Logging a special message into Dovecot source code

[Meisam Navaki]

Hi,
I wanna modify Dovecot source code.For that,I need to know how can we log a
special message into Dovecot source code?
I tried to write a function to write a message in a file and added it to
Dovecot source code,but it didn't work.
I'm wondering if we can use Dovecote logging functions,but I don't know what
are those functions and how can we use them.
Thanks in advance.

-- 
*Regards
Meisam Navaki Arefi,
*
*System Programmer,
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*Bayan Co.
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