Hello Jeremy,

And thank you for your reply.  I followed the instructions you shared for

dpkg-reconfigure tzdata

This confirmed that my timezone is "America" "New York" and it touched
/etc/localtime.

Then I ran
postfix reload
which logged the following to /var/log/mail.info:

May 18 12:36:15 lamp postfix/postfix-script[6474]: refreshing the Postfix mail system
May 18 12:36:15 lamp postfix/master[1538]: reload -- version 2.7.0, configuration ...

But the logged time is 4 hours ahead of the current time:
root@lamp /var/log# date
Fri May 18 08:36:25 EDT 2012

I ran "postfix reload" again, but it still logs the incorrect time (4 hours ahead).

The problem seems to be with postfix, not Ubuntu.

I had copied /etc/localtime to   /var/spool/postfix/etc/localtime

This apparently fixed the problem for others who have experienced it.

I found this link to /etc/localtime:

root@lamp /var/log# find / -name localtime -exec ls -lut {} \;
-rw-r--r-- 1 root root 3519 May 18 08:33 /etc/localtime
-rw-r--r-- 1 root root 3519 May 17 12:06 /var/spool/postfix/etc/localtime
lrwxrwxrwx 1 root root 14 May 17 12:06 /var/spool/postfix/usr/lib/zoneinfo/localtime -> /etc/localtime
lrwxrwxrwx 1 root root 14 May 17 12:07 /usr/share/zoneinfo/localtime -> /etc/localtime

I broke the link, then copied /etc/localtime to

/var/spool/postfix/usr/lib/zoneinfo/

but still no luck.

Might there be some other directory where the "localtime" file should be copied to make postfix happy?

Regards,
Dan