03-05-2002
Is this server only running Sendmail? If so, then check to see if you have an increased volume of email that it is handling.
If you save the messages files or have stats on how much mail it handles, please check to see how many messages per week. If spammers have started hitting your system, this could be the only problem you are having.
You can check that you are not an open relay for spammers to use (
www.abuse.net)
Next, do you have sar or any monitoring running? What is the version of Sendmail? Is it set up to use DNS? Has DNS recently changed (if sendmail is waiting on DNS, it can slow down your system as messages are not flowing as quickly waiting on timeouts from a DNS request).
Post output from % /usr/lib/sendmail -d0.1 -bt < /dev/null
(change company info as appropriate).
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LEARN ABOUT OPENSOLARIS
check-hostname
check-hostname(1M) System Administration Commands check-hostname(1M)
NAME
check-hostname - check if sendmail can determine the system's fully-qualified host name
SYNOPSIS
/usr/sbin/check-hostname
DESCRIPTION
The check-hostname script is a migration aid for sendmail(1M). This script tries to determine the local host's fully-qualified host name
(FQHN) in a manner similar to sendmail(1M). If check-hostname is able to determine the FQHN of the local host, it reports success. Other-
wise, check-hostname reports how to reconfigure the system so that the FQHN can be properly determined.
FILES
/etc/hosts Host name database
/etc/nsswitch.conf Name service switch configuration file
/etc/resolv.conf Configuration file for name server routines
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsndmu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
domainname(1M), sendmail(1M), hosts(4), attributes(5)
SunOS 5.11 8 Mar 2006 check-hostname(1M)