[qmailtoaster] PERM_FAILURE: SMTP Error

[Joshua Hopkins]

I started getting this error message from my qmail server.  Everything has been working fine for the last 8 months.  A vendor was trying to send us some documentation in .doc (MS Word) format.  There were 5 attachments total adding up to 543kb in size.  They got back the following error:   Technical details of permanent failure: PERM_FAILURE: SMTP Error (state 12): 554 invalid message content  (#5.3.2)   If they send the same message but without the attachments it comes through just fine.  We are now getting the same errors from other vendors and customers in regards to other attachments i.e. gzip, tar, zip, rar, pdf, gif, jpg, png, xls, and many others.  It does not seem to happen to all messages with attachments though.    I am assuming that I need to adjust what is filtering the message content.  First I thought that would be ClamAV or Spamassassin, but that would give a different error message.  Where do I need to look to adjust what is filtering the message content?  Has anyone else seen this kind of problem before or can point me in the right direction?   Thanks,       Joshua Hopkins