Message exceeds size limit
<firstname.lastname@example.org>: host mx-rr.home.com said:
552 Message size exceeds fixed maximum message size (5000000)
<email@example.com>: host mx2.mail.yahoo.com said:
552 message size exceeds maximum message size
<firstname.lastname@example.org>: host mx01.mail.bellsouth.net said:
552 Message size exceeds fixed maximum message size: 5242880 bytes
These errors mean that the size of the message, including all headers, text and attachments, exceeds the domain's maximum per-message size limit - essentially, that your email is too big to be accepted. You should try to reduce the size of the message, or try to split the email into smaller parts and resend it.