Emails to corporate domains being bounced

1) None or your officers has a GE email address.

2) the one GE email address is working now.Sep 23 23:28:02 toastmastersclubs sendmail[27099]: 28NNRx3B027096: to=<gina.ruggeri@ge.com>, ctladdr= (501/502), delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=121472, relay=mx0b-00176a02.pphosted.com. [67.231.157.41], dsn=2.0.0, stat=Sent (3jn9cgppck-1 Message accepted for delivery)

That's because I changed it to use his Gmail address due to this issue. It's:
steve.mcguinness@ge.com

I can't test what doesn't exist.
Have your tried it?
Is it still an issue?

OK, we tested it. No bounce. Recipient received. Looks like it's 100% fixed!

Can I ask what solved the problem and is this something that can happen again?

Their company uses an email service that allows spammer and those spammers have mailed FTH.
Remember any unrequested email can be marked as spam by any club.

Understood, thank you. I appreciate the quick and successful support here. We can "close" this!