sendmail strips +details from address

[Reinhard Proessler]

Hello,

first let me say: in the basic configuration, that means 
on a redhat box with cyrus deliver and sendmail 8.11.6
everything runs fine.
An email to an address like username+sub at ourdomain.com 
reaches the folder sub of user username as expected.

But since i've setup trendmicro interscan with sendmail
in sandwich form, the +detail information got lost.

All normal emailaddresses get the virusscanned email properly.
Only a mail to username+sub at ourdomain.com drops into the 
Inbox folder
I think the problem is that any email has to pass sendmail 
twice. This is part of the sandwich setup and i can see 
this in the logfile. 
Any suggestion how to tell sendmail not to strip +details?

B.Rgds
RPr


Reinhard Proessler, Hanjin Shipping
::: EDP/Telecommunikation 
::: Admiralitaetsstr. 56, 20459 Hamburg
::: Tel.: 0049 40 37685 443
mailto://reinhard.proessler@hamur.hanjin.com