Ok, Amazon (SES) has a weird thing about capitalization... for most mailboxes (the part in front of the @ symbol), it's not case-sensitive, while the domain (the .com part behind the @ symbol) IS case-sensitive. EXCEPT SES, which thinks both are case-sensitive.
I made your email address all lowercase to make it "clean" for the delivery server, so that might be what's causing it. Can you try sending again with laremenicky@ instead of LARemenicky@ ?