Re: 'lost connection with domain while sending end of data -- message may be sent more than once'

1 msg	Postfix 2.3.9 available
2 msg	Postfix 2.4.1 available
4 msg	Alias directory
4 msg	Aliased domains bypass address verification
2 msg	Correct smtp auth config...
11 msg	smtp_connection_cache_on_demand
4 msg	Multiple Instances status quo?
15 msg	Setting up to send mail
5 msg	Relayhost - specify port inside or outside the ...
6 msg	Policyd for postfix is going crazy
2 msg	Can't seem to connect

'lost connection with domain while sending end ...
\ Hargis, Mandy (30 Apr 2007)
. \ Victor Duchovni (30 Apr 2007)
. \ (Wietse Venema) (30 Apr 2007)
. . \ Hargis, Mandy (30 Apr 2007)
. . . \ (Wietse Venema) (30 Apr 2007)
. . . . \ Hargis, Mandy (1 May 2007)
. . . . . \ (Wietse Venema) (1 May 2007)
. . . . . . \ (Wietse Venema) (1 May 2007)
. . . . . . \ Hargis, Mandy (1 May 2007)
. . . . . . . \ (Wietse Venema) (1 May 2007)

21 msg	Whitelisting Redux
7 msg	question about 'local_recipient_maps ='
2 msg	SMTP relay
5 msg	Need help
2 msg	specifying relay_domains
22 msg	Policy Log Warning - Why?
27 msg	Epoll fun
3 msg	relocated_maps message

Subject:	Re: 'lost connection with domain while sending end of data -- message may be sent more than once'
Group:	Postfix-users
From:	(Wietse Venema)
Date:	30 Apr 2007

Hargis, Mandy:
> 1/ ndd -get /dev/ip ip_path_mtu_discovery
> 0

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?

Wietse