[exim] not blocking on $sender_host_address

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Autor: Ronan McGlue
Data:  
A: exim-users
Assumpte: [exim] not blocking on $sender_host_address
currently just updated from 4.51 to 4.54 because i was taking server
down anyway for a while.

i get

TLS error on connection from x.x.x [y.y.y.y] (SSL_accept):
error:00000000:lib(0):func(0):reason(0)

from a couple of IPs within my network.
TLS works fine for me so i presume its some outlook client got itsleft
in a knot... but more to the point when i put the users IP into a
blacklist for an auto reject as below it works for a short time then
allows mail through again...

acl_check_rcpt:
...

deny    condition     = ${lookup {$sender_host_address} lsearch 
{/usr/exim/infected} {1} {0}}
          message       = Your mail client is misconfigured : TLS error 
. Mail sending prohibited.
          log_message   = $sender_host_address blacklisted



the file /usr/exim/infected is a file of IPs on new lines

any thoughts?

Ronan