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.

Avatar for Username

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

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Bad sender address syntax

  • 3 iimpendulo
  • 1 inayo le ngxaki
  • 1 view
  • Impendulo yokugqibela ngu zeus777

zeus777
zeus777
more options

Just started receiving this message. "An error occurred while sending mail. The mail server responded: 5.1.7 Bad sender address syntax. Please verify that your email address is correct in your account settings and try again." This account was working perfectly now I can't send any message without getting this message. How do I fix this?

Just started receiving this message. "An error occurred while sending mail. The mail server responded: 5.1.7 Bad sender address syntax. Please verify that your email address is correct in your account settings and try again." This account was working perfectly now I can't send any message without getting this message. How do I fix this?

Isisombulu esikhethiweyo

What server are you using? Yahoo ? What comes after the @ in your email address?

Funda le mpendulo kwimeko leyo 👍 0

All Replies (3)

Toad-Hall
Toad-Hall
  • Top 10 Contributor
more options

Isisombululo esiKhethiweyo

What server are you using? Yahoo ? What comes after the @ in your email address?

Toad-Hall
Toad-Hall
  • Top 10 Contributor
more options

re :Please verify that your email address is correct in your account settings

right click on mail account name in Folder Pane and select 'Settings' select 'Server Settings' Email address = full email address you can completely remove to ensure no hidden blank spaces and then retype the full email address. Make sure you do not add a full stop at the end nor add a space. click on OK

zeus777
zeus777 Umnini wombuzo
more options

Thank you. Somehow the email address was altered to the website address. I don't do this so Thunderbird must have. Might be a bug. Thanks Toad-Hall for your help.