laurencoull
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Emails rejected by BT
Have a domain hosted by BT with several email accounts attached to it, all set up on my Exchange 2010 server & Outlook 2007 clients. In EMC under Organisation Config, Hub Transport has its Send connector set to send via smarthost ‘smtp.btconnect.com’. All was well for many months until Friday when suddenly all outgoing emails bounced within seconds with “The following organisation rejected your message: mail.btconnect.com #550 not permitted”. Took this up with BT who claim the smtp settings for this domain should be:
Server name: smtp.office365.com
Port: 587
Encryption method: TLS
I tried to explain Exchange had been set up the way it was all along and worked perfectly well until Friday but the technician insisted my configuration should not have worked and the only configuration which should have worked was the one he gave me above. But unless I’m missing something there isn’t anywhere in the Hub Transport settings to change the port number or specify TLS encryption
Server name: smtp.office365.com
Port: 587
Encryption method: TLS
I tried to explain Exchange had been set up the way it was all along and worked perfectly well until Friday but the technician insisted my configuration should not have worked and the only configuration which should have worked was the one he gave me above. But unless I’m missing something there isn’t anywhere in the Hub Transport settings to change the port number or specify TLS encryption
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Or you can update your settings to what he told you and see if that works.
You need to use powershell to define the port on a smarthost. This will be done with the get/set-sendconnector command as detailed here: http://forums.msexchange.org/Smart_Host_using_Port_587/m_1800467895/tm.htm