Hello Pankaj
Your developers were right - the hosting company uses Baracuda anti-spam software which has decided that that particular Jomsocial admin message qualifies as spam, viz :
Rule breakdown below
pts rule name description
0.00 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
0.00 HTML_MESSAGE BODY: HTML included in message
2.50 BSF_SC0_SG0104_1 Custom rule SG0104_1
0.10 BSF_SC0_SA085 Custom Rule SA085
0.20 BSF_SC0_MV0713 Custom rule MV0713
2.20 BSF_SC0_SG0104a Custom rule SG0104a
Worse still - it blocks them silently so we had no idea
I can see no reason why the message should be considered to be spam - it looks perfectly innocuous to me:
The rules it scores highly on are Baracuda's 'Custom Rules', details of which aren't released so it would be guesswork to try and design a message to get past it; plus they can change those rules at any point and the site then fails silently again - we can't operate with the spam software being able to dictate our functionality on a whim.
I have asked the hosting company for a solution as it is them that are choosing to apply a software layer that hobbles a commercial product - will let you know but thank you for your assistance in getting to the bottom of this
RG