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

This thread was archived. Please ask a new question if you need help.

An error occurred while sending mail: The mail server sent an incorrect greeting: mail.o2.co.uk Service not available - too busy. What's this mean & how fix pl

  • 1 reply
  • 1 has this problem
  • 6 views
  • Last reply by Matt

NipperAlan
NipperAlan
more options

This error message has just started today. Be grateful if someone could tell me what it means and how to fix. Been getting odd messages in last couple of weeks re requests for passwords re my tiscali/lineone and o2 email addresses but I have clicked cancel and all has been well. Now this new message "An error occurred while sending mail: The mail server sent an incorrect greeting: mail.o2.co.uk Service not available - too busy" has arrived I can't send or receive emails.

Be grateful for any help Thanks in advance..

This error message has just started today. Be grateful if someone could tell me what it means and how to fix. Been getting odd messages in last couple of weeks re requests for passwords re my tiscali/lineone and o2 email addresses but I have clicked cancel and all has been well. Now this new message "An error occurred while sending mail: The mail server sent an incorrect greeting: mail.o2.co.uk Service not available - too busy" has arrived I can't send or receive emails. Be grateful for any help Thanks in advance..

All Replies (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

The to busy message is from your mail providers mail server telling you it is to busy to communicate with you. So I suggest you ask the owners of said server what the issue its.