e-mail size limits

[Robert Swan]

I have recently taken over administration of a Spamassassin server that is running RedHat 9, and Spamassassin 3.04, spamd, spamc, postfix. When users from the outside try and send us e-mail larger than 10MB they get a bounce back:       Administrator@thierdomain.com on 6/30/2005 11:43 AM             This message is larger than the current system limit or the recipient's mailbox is full.  Create a shorter message body or remove attachments and try sending it again.             <server.thierdomain.com #5.2.3 smtp;450 5.2.3 Msg Size greater than allowed by Remote Host>     Assuming that the mailbox is not full (especially because it is on another server), how would the linux/spamassassin box be limiting the mail size? And where would I find this setting, woould it be postfix, sendmail or spamassassin that is doing it?     Thanks in advance for you help.       Robert             Peace he would say instead of goodbye....peace my brother.