Server :: Sendmail.xmail From Cron - Seems To Freeze

I'm running xmail 1.26 on centos. Everything is working fine except getting email from cron for jobs that output stuff (I am getting the daily logwatch which contains the jobs ran and "MAIL sending errors X Time(s)", where X varies (today, that X is going to be very high))

The xmail sendmail replacement is setup according to docs (AFAIK) and looks like this:

Code:

The sendmail.xmail script looks like this:

Code:

Now, when the cron runs the job (it's just a script that verifies if the actual job is running and if not it starts it, outputting that it did so), things will look like this (pstree output):

Code:

Code:

Cron log on system says something like this:

Code:

The sent bytes varies depending on which script generates the error.

I couldn't find what the 0x0007 error code means.

Why the sendmail from cron is freezed/failed?