552 message size exceeded

[chris.hinds]

Hi,

We are having a problem with just one particular company sending attachments to us. Normal email with no attachments is coming in fine. email with attachments is not.

The sender (i.e at the other company) is getting the following message when they try to send to us :

"The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator. #5.0.0 smtp; 552 size limit exceeded"

The message attachment is small about 900K and we regularly receive stuff up to 20Mb. If the same attachment is sent from a different email system to us it comes straight in.

Has anyone got any advice ?

cheers

Chris

[Bart_ironport]

Check your host access table. This one company probably has a lower reputation score, matching a different rule in the HAT than the other companies.
If i'm not mistaken, the default maximum message size for the throttled policy is 1M. With the overhead you get when sending email attachments, this will probably block files of 900K.