If I understand your question, you can set it in the in slurm.conf file, the default is:
MailProg = /usr/bin/mail From: Fanny Pagés Díaz <fpa...@citi.cu<mailto:fpa...@citi.cu>> Reply-To: slurm-dev <slurm-dev@schedmd.com<mailto:slurm-dev@schedmd.com>> Date: Wednesday, September 28, 2016 at 11:45 AM To: slurm-dev <slurm-dev@schedmd.com<mailto:slurm-dev@schedmd.com>> Subject: [slurm-dev] Send notification email I need send notification email from Slurm using other mail server which is not the standard one. Any can help me?