5.2.1 Message rejected 1

[ikpa]

Some clients are getting this message in rejected mails coming off my smtp server. The mail box is alive and there is no size restriction for this client. Any ideas? Thanks!
Ikpa

 

[dennisbbb]

Two things to look at:

1. The recipient mailbox has been disabled
2. Message size is too big.

For any reason the recipient is not there to get the message, 5.2.1 will exist on your log.

 

[dennisbbb]

http://support.microsoft.com/?kbid=284204

Numeric Code: 5.2.1

Possible Cause: Local mail is refused because the message is too big. An absent Master Account Security ID number (SID) on the recipient can also cause this error message.

 

[dennisbbb]

Sorry I just have to share this. You can make up your combination and tell what they are quickly. Print it out for quick reference.

===========================================================

Collected Status Codes
First Digit
2.X.X Success
4.X.X Persistent Transient Failure
5.X.X Permanent Failure

Second and Third Digits
X.1.0 Other address status
X.1.1 Bad destination mailbox address
X.1.2 Bad destination system address
X.1.3 Bad destination mailbox address syntax
X.1.4 Destination mailbox address ambiguous
X.1.5 Destination mailbox address valid
X.1.6 Mailbox has moved
X.1.7 Bad sender's mailbox address syntax
X.1.8 Bad sender's system address

X.2.0 Other or undefined mailbox status
X.2.1 Mailbox disabled, not accepting messages
X.2.2 Mailbox full
X.2.3 Message length exceeds administrative limit
X.2.4 Mailing list expansion problem

X.3.0 Other or undefined mail system status
X.3.1 Mail system full
X.3.2 System not accepting network messages
X.3.3 System not capable of selected features
X.3.4 Message too big for system

X.4.0 Other or undefined network or routing status
X.4.1 No answer from host
X.4.2 Bad connection
X.4.3 Routing server failure
X.4.4 Unable to route
X.4.5 Network congestion
X.4.6 Routing loop detected
X.4.7 Delivery time expired

X.5.0 Other or undefined protocol status
X.5.1 Invalid command
X.5.2 Syntax error
X.5.3 Too many recipients
X.5.4 Invalid command arguments
X.5.5 Wrong protocol version

X.6.0 Other or undefined media error
X.6.1 Media not supported
X.6.2 Conversion required and prohibited
X.6.3 Conversion required but not supported
X.6.4 Conversion with loss performed
X.6.5 Conversion failed

X.7.0 Other or undefined security status
X.7.1 Delivery not authorized, message refused
X.7.2 Mailing list expansion prohibited
X.7.3 Security conversion required but not possible
X.7.4 Security features not supported
X.7.5 Cryptographic failure
X.7.6 Cryptographic algorithm not supported
X.7.7 Message integrity failure

===========================================================

 

[ikpa]

The mail box is valid and the mail size wasn't big. The only thing I can think of is invalid header. How can I determine if a mail has an invalid header.. thanks all
ikpa