This is a configurable option. You can either have it not pass traffic if the syslog server is unavailable, or you can allow it to pass traffic. You configure it like this:

no logging permit-hostdown

or

logging permit-hostdown

depending on the desired result.

*Please rate if helpful

The above option is ONLY valid if using TCP syslog. UDP syslog is best effort, so syslog server going does not have any direct impact on ASA but you may be port unreachable messages.

guys

thanks for all your posts.. So if using UDP and the syslog server i down, then the packets will b dropped, is that correct?