* Edward Morbius <dredmorb...@gmail.com>:
> Several of our peer mail systems (outbound) seem to take a while responding
> to initial SMTP connections.

That happens if:

* your dns is slow (reverse lookups of the client IP)
* all your SMTPD processes are in use
 
> Is there any particularly dread pitfall to watch out for in bumping these
> values up?  20s for connection, 40s for HELO is where we're at presently.

Which values exactly?

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebra...@charite.de | http://www.charite.de
            

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