Reducing the email delivery delay when rebooting the Hub Transport Server Share on Facebook Tweet on Twitter Share on LinkedIn Home › Forums › Messaging Software › Exchange 2007 / 2010 / 2013 › Reducing the email delivery delay when rebooting the Hub Transport Server This topic contains 0 replies, has 1 voice, and was last updated by Albertwt 6 years, 2 months ago. Viewing 1 post (of 1 total) Author Posts AlbertwtMember March 17, 2013 at 6:38 pm #161148 Hi, Can anyone please suggest me some way to reduce the email delay duration when patching or rebooting the IGMP multicast cluster Hub Transport server + CAS role (Exchange Server 2007) ? some of my clients got Delivery is delayed to these recipients or distribution lists email reply when sending email to my organization (smtp;400 4.4.7 Message delayed). FYI: The next hop after the Hub transport + CAS is a UNIX Solaris box running sendmail acting as the email gateway to the Symantec MessageLabs. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.