1) please do not jump anothers thread, your problem is not theirs and visa versa.
2) Your mail server is rejecting the connection from our server complaining of load and too many connections.
Code:
Jul 26 15:22:16 toastmastersclubs sendmail[25360]: 36QFMETp025324: to= , ctladdr= (501/502), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=140992, relay=mail.versidex.com. [107.180.50.186], dsn=4.0.0, stat=Deferred: 421 Too many concurrent SMTP connections from this IP address; please try again later.
3) When you are sending email you are sending from comcast why don't you use your comcast email?
4) you might try adding server@toastmastersclubs.org and agenda@toastmastersclubs.org to your safe list and or contacts at your godaddy email service.