Problem Sending & Receiving Attachment Over 3 MB

[vavai]

Hi,

I have a problem on one of our mail server, Zimbra 7.1.0 on SLES 11 SP1 64 bit. It need a long time to processing message with attachment over 3 MB. If I look at the queue manager on Zimbra Admin, message stuck on Amavis content filter (port 10024).

I have 10 MB of max mta size setup. Attachment are pdf file.

Is there any solution to resolve the problem?

Note :

Searching over Google and found some suggestion regarding smtp_data timeout http://abechik.wordpress.com/tag/zimbra/.

How can I modify the following entry on postfix main.cf (assume that main.cf will automatically reload & created by Zimbra)

smtp_data_done_timeout = 600s
smtp_data_init_timeout = 120s
smtp_data_xfer_timeout = 600s

[BCamp]

Thank you for that link. I've been looking for exactly that for several weeks now. I updated my value by

postconf -e smtp_data_xfer_timeout=600s

Ran a postfix reload, then ran a

postconf|grep smtp_data

To ensure that my value remained changed after a reload. It did, hopefully this will solve my timeout issue with Yahoo.

I believe if you try to edit main.cf directly, the default values will override your changes on your next postfix reload.