In your log & one of the bounces "timeout after DATA" & "lost connection after DATA" & "421 mail.example.ca Error: timeout exceeded" would have me thinking smtpd_timeout values
but then your one bounce 'recipient address rejected' would usually be something in smtpd_recipient_restrictions/smtpd_client_restrictions
attempting to combine those random thoughts-do you have anything in a smtpd_data_restrictions value?
hm-some web searches find a lot a MTU issues for people with 'timeout after DATA'
Last edited by mmorse; 10-02-2007 at 06:06 PM..
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