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Re: SMTP stopped working after changing Broadband speed

David_W102 — Tue, 14 Apr 2026 19:32:29 GMT

Hi there - Looks like I have the same issue. Just signed up with Toob 900mbps and starting seeing issues with sending emails (receiving was fine). Spent a day pulling my hair out trying to figure it. My email client (Thunderbird) was reporting an issue with SMTP server... Spoke to Toob and BT and didn't really get very far. Then decided to use my phone as a hotspot instead of the Toob router and bingo can send emails again. So can anybody enlighten me as to what the issue is and how to recify ?

Re: SMTP stopped working after changing Broadband speed

gg30340 — Tue, 14 Apr 2026 19:41:20 GMT

@David_W102

If you are no longer a BT Broadband customer your BTMail email account will be downgraded to a BTMail Basic account which can only be used on webmail and not with email clients/apps.

BT Email products | Email Help | | BT Help

Re: SMTP stopped working after changing Broadband speed

David_W102 — Tue, 14 Apr 2026 19:51:29 GMT

I signed up for BT premium ages ago after leaving BT. I moved to TalkTalk and have just recently moved to full fibre wth Toob.

Re: SMTP stopped working after changing Broadband speed

licquorice — Tue, 14 Apr 2026 20:07:49 GMT

If it works with a hotspot but not via Toob, it would suggest your IP address allocated by Toob is on a blacklist.

Re: SMTP stopped working after changing Broadband speed

David_W102 — Tue, 14 Apr 2026 20:54:30 GMT

Yep - I did do a check with Spamhaus - and it did flag issues .... Will go back to Toob ..