Problems with message size...

[borbosha]

We have a zimbra email server setup and have some clients that are needing to send some larger files as attachments. Unfortunately, even after following the instructions in the wiki (Configuring maxmessagesize - Zimbra :: Wiki) I am unable to send large messages.

I am attaching a 10 MB file to the email message and sending it. The error I get back is:

<admin@xxxxxxx.com>: message size 14011600 exceeds size limit 3072000 of server
    mail.xxxxxxx.com[xxx.xxx.xxx.xxx]

I understand that the message is too big for the limit on the server. However, I have set the limit to 104857600 for both zimbraFileUploadMaxSize and zimbraMtaMaxMessageSize.

Any idea what might be causing this problem?

[tiger2000]

not sure if it helps, but did you restart zimbra service after change these values?

[borbosha]

Well, I actually found the problem and it wasn't with Zimbra, though I did make sure to restart Zimbra when setting these.

Turns our the stupid firewall was limiting attachments to 3 MB. Bumped it up and things started working.