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* add an iptables rule on router to forward port 2212 to email:22, don't forget to edit ops345sg
* email_public_ip
* add A record for email now since it will take some time to propagate
* add MX email.asmith15.ops345.ca.[1]
* test on router first, records are cached for 60 minutes. test on www second, email third, finally make sure it works on the workstation
* same instructions as for vg_www-lv_www but vg_email-lv_email, mounted on /home
* but also mount it on /tmp/home, and move everything from /home to /tmp/home before rebooting
* ss -atnp
* add access to port 25 from anywhere in ops345sgemail
* test using telnet from workstation
* send email from myseneca to asmith15@asmith15.ops345.ca
