email vcf attachment

Host way is my email hosting provider. I recently changed my domain name from to
NOw, when user tries to send emails from ** to ** with attachment of contacts.( .vcf file ),  the attachment becomes untitled attac. dat and something. txt file when the receipiants opens the email.
the issue seems only happen when sending emails internally ,ie. sending from ** to **
Any suggestions would be helpful. Thanks
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sounds like a spam filter in operation, hostway must be ripping off the attachment and putting this in its place. contact to confirm first

changjiaAuthor Commented:
I contacted hostway, they told me that they don't block vcf file. I also did some sending and receivng vcf file with hostway , all good. right now, host way is out of picture. I am thinking maybe i need to look into my firewall settings now.
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