I have seen this error at customer sites when the DNS pointer from the
sending server doesn't point to the sending domain like yours does. see
below:
Name Server: AUTH2.NS.ENI.NET
Query: 206.135.201.2
Type of Search: PTR - Domain name pointer
Protocol: UDP
Verbose: Yes
Recursion Desired: Yes
Header:
ID=23417, QR=Response, Opcode=QUERY, RCODE=NO ERROR
Authoritative Answer=Yes, Truncation=No
Recursion Desired=Yes, Recursion Available=No
QDCOUNT=1, ANCOUNT=1, NSCOUNT=3, ARCOUNT=3
Question:
Name=2.201.135.206.IN-ADDR.ARPA, QTYPE=PTR, QCLASS=1
Answer Section:
- Name=2.201.135.206.IN-ADDR.ARPA
Type=PTR, Class=1, TTL=14400 (4 Hours), RDLENGTH=13
PTR=eclipse.org
Q: How is eclipse.org related to endoxy.com?
Michael O'Toole
System Engineer
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Exchange Discussions" <[EMAIL PROTECTED]>
Sent: Tuesday, January 15, 2002 11:34 AM
Subject: 553 error
> A user is trying to send an email to a valid address but keeps getting
this
> ndr as shown below. Any ideas why this is happening?
>
> TIA.
>
> [EMAIL PROTECTED] on 1/15/2002 8:23 AM
> The recipient name is not recognized
> The MTS-ID of the original message is: c=US;a=
> ;p=CBT;l=EHAEXP-020115142238Z-2440
> MSEXCH:IMS:CBT:CBT:EHAEXP 3553 (000B09AA) 553 sorry, that
domain
> isn't in my list of allowed rcpthosts (#5.7.1)
>
>
>
>
>
> Bill Lambert, MCP,MCSE
>
>
> Network Consultant
> Endoxy Healthcare
> 847-941-9206
> [EMAIL PROTECTED]
>
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