Jos Chrispijn:
> On 22-5-19 13:11, Wietse Venema wrote:
> > postscreen needs exclusive access to the btree file, and some other
> > program other program already has access to the file (exclusive or
> > non-exclusive). That could be another postscreen, or postmap, or
> > some other program.
>
> As far as I know there are no other programs using the btree file.
> I will check further, thanks for your reply.
It is also possible that your kernel can't handle the exclusive
lock request because it is running out of kernel resources. How
often are you restarting/reloading Postfix?
I have some supicions, but let's hear from you first.
Wietse
