Hello Folks!

I am fighting a problem which happens when you submit mail.
All the environment with firewalls and DNS, mail relay is in order.

When you click submit, it takes around 50-70 seconds till mail form goes away.
VERY annoying! But email is delivered normally.

It is the smarthost (macafee security appliance) causing the delay by unknown 
reason:

   Apr  5 12:15:52 darkstar sendmail[27742]: n35AFq9P027742: 
from=st...@ing-steen.se, size=770106, class=0, nrcpts=1, 
msgid=<20090405121552.131758uu9zha4...@172.16.1.21>, relay=apa...@localhost
   Apr  5 12:16:54 darkstar sendmail[27744]: n35AFq9P027742: 
to=pst...@se.ibm.com,delay=00:01:02, delay=00:01:02, mailer=relay, pri=890106, 
relay=[10.30.0.108] [10.30.0.108], dsn=2.0.0, stat=Sent (2.0.0 n35AHZNW096104 
Message accepted for delivery)

Horde/Imp is setup to use local sendmail binary for delivery, direct delivery 
to the smarthost
did offcourse not overcome the submit delay.

To workaround this I did changes to submit.mc in sendmail configuration:
   FEATURE(`msp', `[10.30.0.108]')dnl
   define(`confDELIVERY_MODE',`b')dnl background the submit

This works, the mail form goes away directly and mail is delivered.

QUESTION now is, what if there arrives something like address or host not found 
etc from the appliance.
The delivery is forked, how does horde/imp handle this, will the email just 
vanish in the blue ?

Regards //
       //  Peter Steen
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