File: //etc/exim.conf.local
%RETRYBLOCK%
+secondarymx                    *                               F,4h,5m; G,16h,1h,1.5; F,4d,8h
*                               *                               F,2h,15m; G,16h,1h,1.5; F,4d,8h
@AUTH@
@BEGINACL@
@CONFIG@
tls_require_ciphers = ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256
@DIRECTOREND@
@DIRECTORMIDDLE@
@DIRECTORSTART@
@ENDACL@
@POSTMAILCOUNT@
@PREDOTFORWARD@
@PREFILTER@
@PRELOCALUSER@
@PRENOALIASDISCARD@
@PREROUTERS@
@PREVALIASNOSTAR@
@PREVALIASSTAR@
@PREVIRTUALUSER@
@RETRYEND@
@RETRYSTART@
@REWRITE@
@ROUTEREND@
@ROUTERMIDDLE@
@ROUTERSTART@
@TRANSPORTEND@
@TRANSPORTMIDDLE@
@TRANSPORTSTART@