This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

cannot send emails. getting this message An error occurred while sending mail. The mail server responded: JA4h1u0034B47Fy01A4iSs message rejected due to spam o

  • 3 replies
  • 1 has this problem
  • 3 views
  • Last reply by christ1

more options

Since 24 hours I've not been able to send mail from my laptop using thunderbird. I can send from my phone. I get this message:

An error occurred while sending mail. The mail server responded: JA4h1u0034B47Fy01A4iSs message rejected due to spam or virus. If you believe this is in error please login to your portal or contact your ISP support team.. Please check the message and try again.

I have full cover from McAfee so I don't think it's a virus.

I also had a problem receiving mail the last week and Plusnet have adjusted my spam settings. I can now receive.

Since 24 hours I've not been able to send mail from my laptop using thunderbird. I can send from my phone. I get this message: An error occurred while sending mail. The mail server responded: JA4h1u0034B47Fy01A4iSs message rejected due to spam or virus. If you believe this is in error please login to your portal or contact your ISP support team.. Please check the message and try again. I have full cover from McAfee so I don't think it's a virus. I also had a problem receiving mail the last week and Plusnet have adjusted my spam settings. I can now receive.

All Replies (3)

more options
If you believe this is in error please login to your portal or contact your ISP support team.

Nothing else to say.

more options

Thanks, Thistle! I've contacted Plusnet who are unable to help at all. I don't have a clue how to go froom here regarding contacting my ISP support team (what is that?) or login to my portal. I'm not a tech person and this language doesn't make sense to me.

more options

It is a message from your email provider's server. Only they can tell what this is all about or fix it in the first place. I guess your best bet is to call them.