Error sending to recipients

Tambo

New Member
I've been using an older version of the MBM program for years. When I upgraded to V.6 and tried to send a bulk email to an existing list, only about 15% of the emails went through. The rest were flagged with a red stop sign icon with an exclamation mark ("!") and there was a flashed error message that said something "bad command chain." Has anyone encountered this problem?
 
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