"Dave Mc" <DaveMc@discussions.microsoft.com> wrote in message
news:6A6EC8A3-E351-48FB-AA8C-DF7C8CF80C17@microsoft.com...
> Not using Exchange, just POP3 and SMTP.
>
> I don't quite get what all the "queue" folder under mailroot is used for.
> Some files stay in it a short amount of time (ones waiting to be sent, I
> assume), some forever. The ones which never clear seem to be Delivery
Status
> Notifications (Failure).
> Example:
>
> To: xyz@xyz.com
> Subj: Delivery Status Notification (Failure)
> Date: XXXXXXXX
>
> The body says: This is an automatically generated DSN.
>
> Delivery to the following recipients failed.
>
> jsmith@mydomain.com
>
> Some of these, I can't delete because it says they are in use by someone.
> Some of them seem to "hang" my anti-virus real time scanner (CA) and cause
it
> to use up 99% of my cpu cycles. This is a lightly used server. Should I
> just stop the services at night and delete files or what ??

"Peter Karsai" wrote:

> Hi Dave,
>
> The Queue folder is for emails waiting for delivery. The reason why some
> emails disappear from it almost immediately and others stay there for a long
> time is that some emails can be delivered immediately while others cannot
> be, e.g. because the recipient's mail exchanger does not respond or
> temporarily rejects the email. The undeliverable emails will land in the
> Badmail folder after the expiration, which can be configured in IIS.
>
> I am not sure you cannot delete these files, but you can check which process
> locks the file using the WhoLockMe shell extension or Process Explorer from
> SysInternals.
>
> You may want to implement some tool which rejects the non-existent
> recipients on protocol level. This has the advantage that no NDR is
> generated on your server, so your server does not try to deliver an NDR to
> the sender, which, in most cases, does not exist (and Badmail/Queue is
> filling up due to the undeliverable NDRs).
>
> Peter Karsai
> http://www.vamsoft.com/orf
>
>
> "Dave Mc" <DaveMc@discussions.microsoft.com> wrote in message
> news:6A6EC8A3-E351-48FB-AA8C-DF7C8CF80C17@microsoft.com...
> > Not using Exchange, just POP3 and SMTP.
> >
> > I don't quite get what all the "queue" folder under mailroot is used for.
> > Some files stay in it a short amount of time (ones waiting to be sent, I
> > assume), some forever. The ones which never clear seem to be Delivery
> Status
> > Notifications (Failure).
> > Example:
> >
> > To: xyz@xyz.com
> > Subj: Delivery Status Notification (Failure)
> > Date: XXXXXXXX
> >
> > The body says: This is an automatically generated DSN.
> >
> > Delivery to the following recipients failed.
> >
> > jsmith@mydomain.com
> >
> > Some of these, I can't delete because it says they are in use by someone.
> > Some of them seem to "hang" my anti-virus real time scanner (CA) and cause
> it
> > to use up 99% of my cpu cycles. This is a lightly used server. Should I
> > just stop the services at night and delete files or what ??
>
>