Hi guys, Around a week or two ago I moved all of my sites (maybe around 20 domains) to my VPS hosting. The VPS hosting is with the same company as my reseller and it is an unmanaged VPS so I paid them the money to set it up the same way as their reseller servers were set up. Anyway, I've got a client who tells me he is unable to reply to my email (which I just sent to him yesterday). He says he has tried off of several email accounts but it keeps bouncing back as undelivered. The strange thing is, I also sent off an email around a week ago that is showing in my sent box but the client emailed me today asking when I was going to send it - so he did not get it either? Even stranger, my girlfriend and friends can email me from their Google/Hotmail accounts and I appear to be getting emails regularly from subscrptions and so on (but I don't know if I am getting them all or not as there is no way for me to know) but everything appears to be fine, mainly this one client who says he cannot get an email over to me (he has emailed me several times before no problems). Any suggestions?