“ Mail is randomly being delayed from Exchange 2007 server for several hours.  Initially there were DNS lookup errors in the Exchange SMTP protocol logs.  The Exchange transport was changed to utilize an external DNS server and the errors went away. Now the sender get a message delayed message a...”

“ The organisation I work for has changed the way we deliver mail so we now use our exchange server to deliver through our message security service, instead of sending through our ISP's smarthost - a change that is working very well for most of our needs. We send out newsletters to organisa...”

“   Environment   OS of Exchange = win2008R2   Exchange Version = 2010   Exchange HA = 2nodes in DAG each has one database (Total 2 databases ). CAS/Hub/All roles on each node(No additional Server for CAS/CAS array and HUB Transport)   Domain Controler = one (...”

“ Hi,  Apologies in advance for this simple question but I dont have access to a MessageLabs console to confirm.  My customer currently has one Exchange 2003 server routing mail to\from messagelabs.  They will be replacing it with two Exchange 2010 transport servers for inbound\outbound smtp.  Is th...”

“ I would be very grateful if anyone could help me with the following problem I have been experiencing lately with my emails. I have been alerted by people I have been exchanging emails with lately that they are receiving numerous "Undelivered Mail Returned to Sender" suposedly coming from...”