the the facility was not passed across execs, and only the first message
passed over a connection could use BDAT; any further ones using DATA.
+JH/27 Support the PIPECONNECT facility in the smtp transport when the helo_data
+ uses $sending_ip_address and an interface is specified.
+ Previously any use of the local address in the EHLO name disabled
+ PIPECONNECT, the common case being to use the rDNS of it.
+
Exim version 4.95
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