At 10:30AM EST, we started receiving complaints of intermittent mail delivery problems:

Note: Soap Fault. Please recreate and resend the message. Details below:
Error Code: mail.SEND_FAILURE
Error Text: SMTP server reported: MESSAGE_NOT_DELIVERED

Reviewing /var/log/zimbra.log showed period (Every 10 or so seconds):

Aug 6 12:17:11 wm postfix/smtpd[31623]: warning: TLS library problem: 31623:error:140943FC:SSL routines:SSL3_READ_BYTES:sslv3 alert bad record mac:s3_pkt.c:1197:SSL alert number 20:
Aug 6 12:17:11 wm postfix/smtpd[31623]: warning: TLS library problem: 31623:error:140943FC:SSL routines:SSL3_READ_BYTES:sslv3 alert bad record mac:s3_pkt.c:1197:SSL alert number 20

It seem to be very similar to:

http://www.zimbra.com/forums/adminis...s-8-0-3-a.html

But, we're running Zimbra 7.24 (Network Edition) on Ubunutu 10.04LTS. My Googling this problem hasn't brought up much that I can use.

I have a ticket open with Zimbra, but also thought I'd post here, just in case someone has suggestions. As a side note:

We renewed our SSL certificates 3 weeks ago (startcom ssl)

Thanks!

Doug