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tanuki
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BTinternet email addresses

Post by tanuki » Fri Jan 20, 2017 7:59 am

Hello guys,

just wondering if anything has changed recently with BT antispam policy ?
We do have a few contacts in england on our mailing list (Scimitar France) and recently
all the mail addresses in @btinternet.com came back with delivery errors suggesting that
our messages have been banned :(

<xxxxxxxxx@btinternet.com>: host mx.bt.lon5.cpcloud.co.uk[65.20.0.49] said:
522 email sent from (212.27.42.5) found on industry IP blacklists, please
contact your mail sending service or use an alternate email service to send
your email. Guide for bulk senders http://www.bt.com/bulksender (in reply to MAIL FROM command)

I have been reading the above and afaik the contents of our messages should not look that suspicious,
apart that they are sometimes in HTML and with a few pics attached :(

Surely it's also possible that our contacts might have clicked on 'spam' a few times :oops:
so that we are now blacklisted.

Anyway I just wanted to get some feedback in case that someone else here had noticed similar problems ...

Not a big issue, no worries :wink:
Fred


now: Scimitar SE5 ('71), Scimitar SE6a ('79), Scimitar SST 1800Ti ('90), Ford Anglia LHD ('61), Ford Consul Capri LHD ('61), TVR Chimaera 400 ('96), Caterham SV ('10), Lexus IS200 ('04), Austin Metro 1000 ('82)
past: Mitsubishi Celeste ('77), Alfetta Quadrifoglio ('85), Nissan Maxima ('95)

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Re: BTinternet email addresses

Post by AJL Electronics » Fri Jan 20, 2017 8:08 am

There are similar complaints from the mig-welding forum. No idea why though.


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Re: BTinternet email addresses

Post by Old and Slow » Fri Jan 20, 2017 10:46 am

Peutetre it might be because you are sending out lots of emails simultaneously, it looks like spam to the BT server. If you try sending out an email individually it might get through OK.
Worth a try?
Philip


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Re: BTinternet email addresses

Post by Oldconn » Fri Jan 20, 2017 11:28 am

I had a similar problem when trying to contact my American friends who use Juno. It went on for about a year, with Juno constantly blocking anything that came from Orange.fr. It stopped suddenly after I changed to Windows 10 .


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Re: BTinternet email addresses

Post by AJL Electronics » Fri Jan 20, 2017 12:31 pm

I think that BT has decided to blocklist a number of known SPAMmy ISPs. Other complaints are about 1and1 who are well known as a safe haven for SPAMmers. Also many French ISPs turn a blind eye and once in a while get put in the blocklist. SPAMhaus might give some enlightenment as they provide the information about a lot of the IP ranges that have been generating complaints.


Yes, we can mend your Scimitar!
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Fancy a holiday in Gael, France? http://www.ianrhu.com

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Re: BTinternet email addresses

Post by AJL Electronics » Fri Jan 20, 2017 12:32 pm



Yes, we can mend your Scimitar!
Order your Scimitar parts any hour of the day at http://www.classicmicrocars.com (member's discounts).

Fancy a holiday in Gael, France? http://www.ianrhu.com

There is no point trying to teach a pig to sing. It doesn't work and it annoys the pig.

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Re: BTinternet email addresses

Post by Roger Pennington » Fri Jan 20, 2017 12:52 pm

Yes some people with BT Internet addresses do seem to be having problems with emails being blocked. I know a number of people who are on BT and fail to receive things they wanted to receive. I'm not an expert, as I don't us BT, but my impression is that the problem is something to do with it being very easy to get onto BT's blocklist (often for no discernible good reason), but fiendishly difficult to get off?


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Re: BTinternet email addresses

Post by AJL Electronics » Sun Jan 22, 2017 10:08 pm

This is the thread I referred to. It may be a members only though.
http://www.mig-welding.co.uk/forum/thre ... ost-940024


Yes, we can mend your Scimitar!
Order your Scimitar parts any hour of the day at http://www.classicmicrocars.com (member's discounts).

Fancy a holiday in Gael, France? http://www.ianrhu.com

There is no point trying to teach a pig to sing. It doesn't work and it annoys the pig.

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Re: BTinternet email addresses

Post by drcdb15 » Sun Jan 22, 2017 11:33 pm

This problem is an industry-wide one and is not limited to BT or any specific ISP. Services like Spamhaus maintain lists of network nodes that are discovered to be being used by spammers. These lists are publicly available. Security software including that used by ISPs regularly monitors these lists, and automatically stops any data traffic being routed to any listed 'banned' IP address. Whilst most web sites have relatively few and widely-separated links through any given router or hub, ISPs generally are routing thousands of messages at any one time through the same hub. If that hub gets listed by the Spamhaus (or equivalent) service, the ISP immediately blocks all its traffic routed through that hub. Email providers are typically the same as the ISP, but even where they are not they generally route most of their traffic through the same hub - which of course is the reason the spammers target those hubs. Result is that many thousands of people simultaneously find their emails not getting through.

Individual users of a web site (eg you are ordering something on-line from a small supplier in the sticks) won't find anyone else affected, and just assume it's a one-off glitch that soon disappears. In the case of email it's the sheer volume of people affected that makes it an issue, and everyone starts hitting the forums asking "what's up with BT internet?" or similar. As a user there's nothing you can do about it but wait for the ISP/email service to re-route its traffic through some other hub that's not on the 'banned' list.

If you have friends in differnet parts of the country, you can send emails to each other and see which ones get through, then by checking the detail of the error messages you can figure out where the affected hub is. My ISP is in the UK, but my email goes through a router in Germany, and when this happens (every couple of years or so) I find the banned hub is somewhere in France or Germany. Or, ... you could be outside having fun with your Scimitar.... :lol:


Chris
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