Winsock Error 10051 The network is unreachable

Hi guys,

I have been getting this email bounce report when i am trying to send to novonordisk.com emails. Is this because of my server side or the recipient server side? Please do advise on what i should do to resolve this error. If it is the recipient server side error what should i tell them to do to resolve the issue.

Thanks

The bounced error message :=

This is to inform you that the attached message is being delayed in delivery to the recipient(s). The error may be due to the recipients email server is not available.

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PLEASE DO NOT REPLY TO THIS EMAIL
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Failed address: jesh(at)novonordisk.com

--- Session Transcript ---
Tue 2007-12-04 17:09:48: Parsing message <xxxxxxxxxxxxxxxxxxxxxxxx\pd35001063088.msg>
Tue 2007-12-04 17:09:48: * From: budi(at)centric.com.sg Tue 2007-12-04 17:09:48: * To: jesh(at)novonordisk.com Tue 2007-12-04 17:09:48: * Subject: test email.
Tue 2007-12-04 17:09:48: * Message-ID: <001301c8364b$04aea2a0$6458a8c0@apppakson.local>
Tue 2007-12-04 17:09:48: Attempting SMTP connection to [novonordisk.com] Tue 2007-12-04 17:09:48: Resolving MX records for [novonordisk.com] (DNS Server: 165.21.100.88)...
Tue 2007-12-04 17:09:48: * P=010 S=000 D=novonordisk.com TTL=(82) MX=[mail5.nnithosting.com] {217.16.101.198} Tue 2007-12-04 17:09:48: * P=010 S=001 D=novonordisk.com TTL=(82) MX=[mail1.nnithosting.com] Tue 2007-12-04 17:09:48: * P=010 S=002 D=novonordisk.com TTL=(82) MX=[mail2.nnithosting.com] Tue 2007-12-04 17:09:48: * P=010 S=003 D=novonordisk.com TTL=(82) MX=[mail3.nnithosting.com] {217.16.101.196} Tue 2007-12-04 17:09:48: * P=010 S=004 D=novonordisk.com TTL=(82) MX=[mail4.nnithosting.com] {217.16.101.197} Tue 2007-12-04 17:09:48: Attempting SMTP connection to [217.16.101.198:25] Tue 2007-12-04 17:09:48: Waiting for socket connection...
Tue 2007-12-04 17:10:09: * Winsock Error 10051 The network is unreachable.
Tue 2007-12-04 17:10:09: * 217.16.101.198 added to connection failure cache for 5 minutes Tue 2007-12-04 17:10:09: Attempting SMTP connection to [mail1.nnithosting.com:25] Tue 2007-12-04 17:10:09: Resolving A record for [mail1.nnithosting.com] (DNS Server: 165.21.100.88)...
Tue 2007-12-04 17:10:09: * D=mail1.nnithosting.com TTL=(10) A=[217.16.101.194] Tue 2007-12-04 17:10:09: Attempting SMTP connection to [217.16.101.194:25] Tue 2007-12-04 17:10:09: * 217.16.101.194 in connection failure cache for up to 5 minutes due to previous connection failure(s) Tue 2007-12-04 17:10:09: Attempting SMTP connection to [mail2.nnithosting.com:25] Tue 2007-12-04 17:10:09: Resolving A record for [mail2.nnithosting.com] (DNS Server: 165.21.100.88)...
Tue 2007-12-04 17:10:09: * D=mail2.nnithosting.com TTL=(8) A=[217.16.101.195] Tue 2007-12-04 17:10:09: Attempting SMTP connection to [217.16.101.195:25] Tue 2007-12-04 17:10:09: * 217.16.101.195 in connection failure cache for up to 5 minutes due to previous connection failure(s) Tue 2007-12-04 17:10:09: Attempting SMTP connection to [217.16.101.196:25] Tue 2007-12-04 17:10:09: * 217.16.101.196 in connection failure cache for up to 5 minutes due to previous connection failure(s) Tue 2007-12-04 17:10:09: Attempting SMTP connection to [217.16.101.197:25] Tue 2007-12-04 17:10:09: * 217.16.101.197 in connection failure cache for up to 5 minutes due to previous connection failure(s) Tue 2007-12-04 17:10:09: This message is 62 minutes old; it has 0 minutes left in this queue Tue 2007-12-04 17:10:09: Remote queue lifetime exceeded; message placed in retry queue

 

Thanks.

So it is the recipient side? How can i help the server side to solve the problem? i mean if i were to call them, what info should i tell them that can help them in solving the problem?