Remote(ConnectionReset) external mails (Full Version)

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exexx -> Remote(ConnectionReset) external mails (5.Nov.2016 1:55:05 PM)

the same problem as below i tried to fix for a long time.
could anybody helps here?
Hi All,
I have a problem and would appreciate any advice.
I have an exchange 2013 and 2007 mixed environment.
E-Mail filtering is performed by Symantec Cloud.
We have a Watchguard perimeter firewall.
I have prioritised external delivery through each of the servers in turn and am experiencing the same problem on both.
Logging has been turned on for the receive connectors with the following results.

There doesn't seem to be any pattern and no one has changed anything that we are aware of.
The senders and recipients vary.

The following are an extract from the logs.
2013 Not Working

,+,,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,>,"220 svrmailcit02.cairnsport.com.au Microsoft ESMTP MAIL Service ready at Fri, 27 Feb 2015 14:49:36 +1000",
,<,EHLO mail6.bemta12.messagelabs.com,
,>,250-x.x.com.au Hello [216.82.250.247],
,>,250-SIZE 52428800,
,>,250-PIPELINING,
,>,250-DSN,
,>,250-ENHANCEDSTATUSCODES,
,>,250-STARTTLS,
,>,250-X-ANONYMOUSTLS,
,>,250-AUTH NTLM,
,>,250-X-EXPS GSSAPI NTLM,
,>,250-8BITMIME,
,>,250-BINARYMIME,
,>,250-CHUNKING,
,>,250 XRDST,
,<,MAIL FROM:<a.a.edu.au>,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,*,08D21F9BB6010A14;2015-02-27T04:49:36.473Z;1,receiving message
,>,250 2.1.0 Sender OK,
,<,RCPT TO:<x.x@portsnorth.com.au>,
,>,250 2.1.5 Recipient OK,
,<,DATA,
,>,354 Start mail input; end with <CRLF>.<CRLF>,
,-,,Remote(ConnectionReset)

2013 Working

,+,,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,>,"220 x.x.com.au Microsoft ESMTP MAIL Service ready at Fri, 27 Feb 2015 14:50:01 +1000",
,<,EHLO mail6.bemta12.messagelabs.com,
,>,250-x.x.com.au Hello [216.82.250.247],
,>,250-SIZE 52428800,
,>,250-PIPELINING,
,>,250-DSN,
,>,250-ENHANCEDSTATUSCODES,
,>,250-STARTTLS,
,>,250-X-ANONYMOUSTLS,
,>,250-AUTH NTLM,
,>,250-X-EXPS GSSAPI NTLM,
,>,250-8BITMIME,
,>,250-BINARYMIME,
,>,250-CHUNKING,
,>,250 XRDST,
,<,MAIL FROM:<prvs=15006a912f=a.a.au>,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,*,08D21F9BB6010A15;2015-02-27T04:50:01.567Z;1,receiving message
,>,250 2.1.0 Sender OK,
,<,RCPT TO:<y.y@portsnorth.com.au>,
,>,250 2.1.5 Recipient OK,
,<,DATA,
,>,354 Start mail input; end with <CRLF>.<CRLF>,
,*,,Proxy destination(s) obtained from OnProxyInboundMessage event
,>,"250 2.6.0 <k.k.au> [InternalId=9496172691566, Hostname=x.x.com.au] Queued mail for delivery",
,<,QUIT,
,>,221 2.0.0 Service closing transmission channel,
,-,,Local


2007 not working

,+,,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,>,"220 svrmailcit01.cairnsport.com.au Microsoft ESMTP MAIL Service ready at Fri, 27 Feb 2015 14:30:14 +1000",
,<,EHLO mail6.bemta7.messagelabs.com,
,>,250-y.y.com.au Hello [216.82.255.55],
,>,250-SIZE 52428800,
,>,250-PIPELINING,
,>,250-DSN,
,>,250-ENHANCEDSTATUSCODES,
,>,250-STARTTLS,
,>,250-AUTH,
,>,250-8BITMIME,
,>,250-BINARYMIME,
,>,250 CHUNKING,
,<,MAIL FROM:<b.b.com> BODY=8BITMIME,
,*,08D220179A3F2DCC;2015-02-27T04:30:14.558Z;1,receiving message
,>,250 2.1.0 Sender OK,
,<,RCPT TO:<y.y@portsnorth.com.au>,
,>,250 2.1.5 Recipient OK,
,<,DATA,
,>,354 Start mail input; end with <CRLF>.<CRLF>,
,-,,Remote

2007 working

,+,,
,*,SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
,>,"220 y.y.com.au Microsoft ESMTP MAIL Service ready at Fri, 27 Feb 2015 14:28:25 +1000",
,<,EHLO mail6.bemta7.messagelabs.com,
,>,250-y.y.com.au Hello [216.82.255.55],
,>,250-SIZE 52428800,
,>,250-PIPELINING,
,>,250-DSN,
,>,250-ENHANCEDSTATUSCODES,
,>,250-STARTTLS,
,>,250-AUTH,
,>,250-8BITMIME,
,>,250-BINARYMIME,
,>,250 CHUNKING,
,<,MAIL FROM:<c.c.com>,
,*,08D220179A3F2DC5;2015-02-27T04:28:25.055Z;1,receiving message
,>,250 2.1.0 Sender OK,
,<,RCPT TO:<b.b@portsnorth.com.au>,
,>,250 2.1.5 Recipient OK,
,<,DATA,
,>,354 Start mail input; end with <CRLF>.<CRLF>,
,>,250 2.6.0 <l.l@cmail2.com> Queued mail for delivery,
,<,QUIT,
,>,221 2.0.0 Service closing transmission channel,
,-,,Local




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