Hello, my name is ***** ***** I will do my best to assist you. Give me a few minutes to look over your question and I will respond shortly.
Are you using Outlook on Citrix?
Do you get an error when you send through Outlook?
Your session may be hung on the Citrix application server. Do you know who hosts your Citrix sever that you connect to?
That's the best bet. They control the sessions and your profile.