[exim] callout smtp dialog under 4.43

Hi,

using rcpt vrfy on a gateway machine I'd like to customize
SMTP rejection messages to hide internal details.

ACL:

  accept  domains       = +relay_to_domains
          endpass
          verify        = recipient/callout=10s,defer_ok
          message       = Unknown user

And this is what happens:

$ nc gw.dom.ain 25
220 gw.dom.ain ESMTP Mon, 22 Nov 2004 11:45:52 +0100
ehlo other.host
250-gw.dom.ain Hello other.host [1.1.1.1]
250-SIZE 10485760
250-PIPELINING
250-STARTTLS
250 HELP
mail from: user@???
250 OK
rcpt to: no-one@???
550-Callout verification failed:
550 550 5.1.1 User unknown
quit
221 gw.dom.ain closing connection

$ nc gw.dom.ain 25
220 gw.dom.ain ESMTP Mon, 22 Nov 2004 11:47:07 +0100
ehlo other.host
250-gw.dom.ain Hello other.host [1.1.1.1]
250-SIZE 10485760
250-PIPELINING
250-STARTTLS
250 HELP
mail from: user@???
250 OK
rcpt to: no-one@???
550 Previous (cached) callout verification failure
quit
221 ns.dom.ain closing connection

Is there a way to suppress exim's default messages?

Best regards, Chris

-- 
Christian Recktenwald      :                         :
citecs GmbH                : exim-users-dist@???
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