Route queued emails from Exchange 2007 to 2013

We use exchange pop3 software to download emails from externally hosted email server and to forward exchange 2007 server.

We stopped this software and we are migrating our exchange server from 2007 to 2013.

We moved all users from exchange 2007 to 2013.

But when we restart the 2007 server, by mistake exchange pop3 server started automatically to download emails and forwarded them to the exchange 2007 server. And those email are not reached to 2013 server and get stuck in the queue of 2007.

How can we release them to the users.
Faseen AhmedAsked:
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MASEE Solution Guide - Technical Dept HeadCommented:
If authentication is proper it will deliver the email to the right server.
Make sure server can reach each other using port 25. No need additional settings.
Faseen AhmedAuthor Commented:
See the logs

#Software: Microsoft Exchange Server
#Version: 8.0.0.0
#Log-type: SMTP Send Protocol Log
#Date: 2018-05-12T12:16:54.848Z
#Fields: date-time,connector-id,session-id,sequence-number,local-endpoint,remote-endpoint,event,data,context
2018-05-12T12:16:54.848Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,0,,172.20.1.120:25,*,,attempting to connect
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,1,127.0.0.1:28061,172.20.1.120:25,+,,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,2,127.0.0.1:28061,172.20.1.120:25,<,"220 EXT-TEMP-001 Microsoft ESMTP MAIL Service ready at Sat, 12 May 2018 15:16:54 +0300",
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,3,127.0.0.1:28061,172.20.1.120:25,>,EHLO ACCOR2,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,4,127.0.0.1:28061,172.20.1.120:25,<,250-EXT-TEMP-001 Hello [172.20.1.36],
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,5,127.0.0.1:28061,172.20.1.120:25,<,250-SIZE 37748736,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,6,127.0.0.1:28061,172.20.1.120:25,<,250-PIPELINING,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,7,127.0.0.1:28061,172.20.1.120:25,<,250-DSN,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,8,127.0.0.1:28061,172.20.1.120:25,<,250-ENHANCEDSTATUSCODES,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,9,127.0.0.1:28061,172.20.1.120:25,<,250-STARTTLS,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,10,127.0.0.1:28061,172.20.1.120:25,<,250-X-ANONYMOUSTLS,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,11,127.0.0.1:28061,172.20.1.120:25,<,250-AUTH NTLM,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,12,127.0.0.1:28061,172.20.1.120:25,<,250-X-EXPS GSSAPI NTLM,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,13,127.0.0.1:28061,172.20.1.120:25,<,250-8BITMIME,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,14,127.0.0.1:28061,172.20.1.120:25,<,250 XRDST,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,15,127.0.0.1:28061,172.20.1.120:25,>,X-ANONYMOUSTLS,
2018-05-12T12:16:54.863Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DC,16,127.0.0.1:28061,172.20.1.120:25,<,220 2.0.0 SMTP server ready,
2018-05-12T12:16:55.862Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DD,0,,172.20.1.120:25,*,,attempting to connect
2018-05-12T12:16:55.862Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DD,1,127.0.0.1:28063,172.20.1.120:25,+,,
2018-05-12T12:16:55.862Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DD,2,127.0.0.1:28063,172.20.1.120:25,<,"220 EXT-TEMP-001 Microsoft ESMTP MAIL Service ready at Sat, 12 May 2018 15:16:55 +0300",
2018-05-12T12:16:55.862Z,Intra-Organization SMTP Send Connector,08D5B7DB3D5CC2DD,3,127.0.0.1:28063,172.20.1.120:25,>,EHLO ACCOR2,
MASEE Solution Guide - Technical Dept HeadCommented:
Try creating new certificate and delete the certificate created by Exchange at the time of installation. Enable only SMTP on this certificate. Restart Transport service after this.
New-Exchangecertificate

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Faseen AhmedAuthor Commented:
For 2007 server?
Vidit BhardwajAdminCommented:
You can try to export the emails from 2K7:

https://technet.microsoft.com/en-us/library/aa998625(v=exchg.80).aspx

And put them in the pickup directory folder of 2013 it will be submitted to the queue.

If I remember correctly you already have mail flow issues between 2K7 and 2013 right, one of them is not able to communicate to 2K13 on port 25 is that fixed?
MASEE Solution Guide - Technical Dept HeadCommented:
-->For 2007 server?
On both servers.
Faseen AhmedAuthor Commented:
Fixed the certificate issue and restarted the server 2007 worked.
Faseen AhmedAuthor Commented:
Resolved the issue
MASEE Solution Guide - Technical Dept HeadCommented:
Glad to know you fixed it.
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