sendmail with masquerading

[Alan E Derhaag <aederhaag attbi com>]

To eliminate some mail hosts rejecting my mail postings due to
warnings like my hostname cannot be backtraced I've supplied a smart
mail host and masquerading in the sendmail.cf file, however, I still
get warnings like:

[...]
--------------------- sendmail Begin ------------------------ 

826928 bytes transferred
199 messages sent

Authentication warnings:
    aederhaag set sender to aederhaag attbi com using -f: 4 Times(s)

 ---------------------- sendmail End ------------------------- 
[...]

on my root mail.  Is there a way of getting the masquerading but not
these messages?  Sometimes AOL mail postings will still indicate this
problem.  Is that a problem with their server or mine?