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Suddenly I am getting "Invalid Helo" alert when sending emails to via smtp.hosts.co.ukHosts. Emails are being received OK, I have not changed any settings .

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  • 2 have this problem
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  • Last reply by DavidAShaw

DavidAShaw
DavidAShaw

I have been using Thunderbird for some years, currently 52.2.1 (32-bit). Suddenly today when I tried to send a reply to an email I received an Alert "Invalid Helo". I have not changed any settings in Thunderbird over the past few months and all was working well until today. The Outgoing server is smtp.hosts.co.uk I use Authenticated SMTP on that server, but I have not changed any settings on my Namesco email I tried sending the reply to the same email using Outlook 2010 and all went well. What do I need to do?

I have been using Thunderbird for some years, currently 52.2.1 (32-bit). Suddenly today when I tried to send a reply to an email I received an Alert "Invalid Helo". I have not changed any settings in Thunderbird over the past few months and all was working well until today. The Outgoing server is smtp.hosts.co.uk I use Authenticated SMTP on that server, but I have not changed any settings on my Namesco email I tried sending the reply to the same email using Outlook 2010 and all went well. What do I need to do?

Chosen solution

I decided that I would reinstall the particular account from scratch; this worked OK and "normal service is resumed. I still do not understand why my system, or Thunderbird decided to corrupt/alter my account settings, but these things do happen!

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All Replies (2)

Matt
Matt
  • Top 25 Contributor

@DavidAShaw, still having issues?

DavidAShaw
DavidAShaw Question owner

Chosen Solution

I decided that I would reinstall the particular account from scratch; this worked OK and "normal service is resumed. I still do not understand why my system, or Thunderbird decided to corrupt/alter my account settings, but these things do happen!