I'm using Redhat 7.3 (8.11.6-25.73) & 9.0 (8.12.8-5.90) (all Redhat rpm) and all works great if I remove the -Ac option. (other wise sendmail fails to load saying unknown -A) What is (or was) the -Ac option? Why was it needed and is there a replacement option? I haven't found any information on this other than "don't use -Ac" ... thanks