Neo
Member
Registered: 20th Feb 07
Location: Essex
User status: Offline
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IT Geeks, having an issue with a client and i'm out of ideas:
Email server hosted locally (Exch2010) and on a BTNET leased line. Cannot receive email being sent from any bt hosted address yahoo/bt/nhsmail etc. Can't telnet the server from another BTNET line but can from any other provider
Every other provider etc works perfectly fine. DNS entries are all correct, Reverse DNS correct, Banners all match etc etc etc Exchange Connectivity tool shows no errors etc etc
Everything else is working perfectly, no issues or delays, just this BT fault. I've raised it with every possible support line at BT as I don't think there is anything wrong server end but they are not playing ball.
Any ideas ?
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pow
Premium Member
Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
User status: Offline
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Got a second public IP you could use for incoming mail?
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Neo
Member
Registered: 20th Feb 07
Location: Essex
User status: Offline
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Nope, 1 line with 7, secondary fttc line without static IP.
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pow
Premium Member
Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
User status: Offline
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Route it through the FTTC line temporarily to see if it solves it? Might be a blacklist problem. Can't wait to offload my Exch2013 box to 365 to outsource this sort of problem 
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willay
Moderator
Organiser: South East, National Events
Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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quote:
Originally posted by Neo
IT Geeks, having an issue with a client and i'm out of ideas:
Email server hosted locally (Exch2010) and on a BTNET leased line. Cannot receive email being sent from any bt hosted address yahoo/bt/nhsmail etc. Can't telnet the server from another BTNET line but can from any other provider
Every other provider etc works perfectly fine. DNS entries are all correct, Reverse DNS correct, Banners all match etc etc etc Exchange Connectivity tool shows no errors etc etc
Everything else is working perfectly, no issues or delays, just this BT fault. I've raised it with every possible support line at BT as I don't think there is anything wrong server end but they are not playing ball.
Any ideas ?
What does a traceroute look like from a non BT line and a BTNET line to the IP address?
Depending on how far the traceroute goes, its either a routing issue or firewall issue.
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willay
Moderator
Organiser: South East, National Events
Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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Out of interest is the BTNET line provided with a 'managed' router, i.e. you plug your firewall into their supplier router which you have no administrative access to?
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pow
Premium Member
Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
User status: Offline
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They do Willay, they end up being the media convertor as well
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willay
Moderator
Organiser: South East, National Events
Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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I bet its some fucked up filters on the managed router
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willay
Moderator
Organiser: South East, National Events
Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
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did you find out what it was? 
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