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From: Wietse Venema (wietseporcupine.org)
Date: Mon Apr 30 2007 - 13:39:59 CDT
> 1/ ndd -get /dev/ip ip_path_mtu_discovery
Let's assume for now that this setting works.
> 2/ Our problem is definitely more frequent with sending messages,
> though it's happening receiving as well.
So messages arrive at the remote site, but the Postfix SMTP client
times out before the remote server responds to "."
What is the output from:
postconf | grep smtp_data_
- Is the timeout problem message size dependent?
- How many of those messages are you sending in parallel?