Mail size limit

[Subhasha H.L]

Hi,
   I am getting following error , any one know how to resolve this
/var/lib/imap/socket/lmtp[/var/lib/imap/socket/lmtp] said: 552 5.2.3

Message SIZE exceeds fixed maximum message size (4000000) (in reply to MAIL

FROM command)

Thanks

Subhasha
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