[exim] Exim Callout Header BUG (defer_ok)

The clause "defer_ok" not run in header_sender. To minimize this error I add a
condition...

-----------------------------------------------
...Mail acl (OK, run ok..)
  deny  !verify         = sender/callout=15s,maxwait=45s,defer_ok,random

...data acl original
  deny  !senders        = :
        !verify         = header_sender/callout=15s,maxwait=45s,defer_ok,random

...data acl OK, with condition
  deny  !senders        = :
        condition       = ${if eq
{$sender_address}{${address:$h_from:}{no}{yes}}
        !verify         = header_sender/callout=15s,maxwait=45s,defer_ok,random

Cordialmente, Silmar A. Marca