Distribution lists do not seem to be working

I just recently established our site and cannot seem to get the distribution lists to send out. I have even sent "test" emails to myself with no luck at this point. Did I miss a step in this process? (Club 03543087)

our website is ggn.toastmastersclubs.org
I feel like I had it working when I did a test run earlier in the week. It is still being built, and the primary use is for the centralized point of contact and e-mailing. So, this is not a good thing have down right now

Our server supplier has some issues that cause instability we seem to have it working at this time.

What email addresses are you sending to?

Just leadership at this point. I have even gone in and sent directly to my own name under the treasurer e-mail alias and have not yet received an e-mail. I am going to try a personal computer to see if maybe it is our firewalls as I am doing this through our work-network. THe FTH system might not be playing well with the server firewalls?

Still doesn't work, consistently. One officer received a direct e-mail using the alias e-mail (using the work-server). But the one sent to the distribution list did not seem to go through (using work-server). And any tests I have sent directly to myself (using work and public-servers) have not gone through.

1) have them check their spam boxes

2) you need to check your email address on the site

Apr 3 00:29:43 toastmastersclubs sendmail[31109]: s330ThI5031105: to=<kuztomhillcarz@hotmail.com>, ctladdr= (501/502), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=124035, relay=mx4.hotmail.com. [207.46.8.199], dsn=5.1.1, stat=User unknown
Apr 3 00:46:03 toastmastersclubs sendmail[3414]: s330k2aT003388: to=<kuztomhillcarz@hotmail.com>, ctladdr= (501/502), delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=124066, relay=mx4.hotmail.com. [65.54.188.126], dsn=5.1.1, stat=User unknown
Apr 3 00:56:38 toastmastersclubs sendmail[32125]: s330ubs2032109: to=<kuztomhillcarz@hotmail.com>, delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=122135, relay=mx1.hotmail.com. [65.55.37.120], dsn=5.1.1, stat=User unknown