mailbox vs. non-mailbox SCSI controller?

mailbox vs. non-mailbox SCSI controller?

Post by Kevin Hube » Mon, 11 May 1998 04:00:00

I'm putting specs together for a new Linux system - looking at the
Cheetah 4LP as a drive with an Abit-BX6, PII266 and 128M of PC100 RAM.

Am I better off with a multimaster type board like the Buslogic BT-958
(mailbox) or a non-mailbox like a Tekram DC-390F (Symbios 8751)?

I understand that a onboard CPU mailbox board like the BT958 may take
load off the CPU, but that a non-mailbox board may be faster, due to
the host CPU being faster than an onboard controller CPU.

Is there a clear advantage either way besides cost?

Any experience with both in the same system?  Any other comments
greatly appreciated too.



1. Sendmail, large/corrupted mailboxes, & locking of mailboxes


We've a user on a Linux server (V4.xx) who had some large emails that
came in recently.  when a pop connection is made to reteive the

a) Depending on the pop client, it either stalls on sending the
password, or reports no new messages.
b) The maillog file (updated by sendmail?) refers to this user as a
"kiss of death user" instead of a "user" for the pop connections made.
c) there is a zero byte <username>.lock file in /var/spool/mail,
generated on each pop connection.

Any assistance would be appreciated. I've looked through the How-Tos &
man pages with no luck.

TIA, Stu.
Stuart Summerville      
Project Engineer        
Practel Surveillance Systems


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