Did you see where iinet say they are getting out of email?

Perhaps you could share the error message you receive. We know exactly what you tell us. So far that is that you are having an issue.

HI Matt Yes on transfer list but closing email accounts as we speak as I use for business and cant rely on Netspace or Thunderbird at the moment.... According to iinet, my emails have not been transferred yet but they are having huge problems with Thunderbird & Outlook express. Their only suggestion is to remove and re-add email to Thunderbird. I did that with one mailbox under their instruction and never saw an email or folder from this mailbox again. I am closing that one in a couple of days. Incoming is still working. Outgoing not. Both work from my phone with Safari

So the messages seem to be different each day... here is a sample From movieart@netspace.net.au Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) mail.iinet.net.au. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

From akj@netspace.net.au Login to server mail.iinet.net.au with username movieart@netspace.net.au failed. (today) Previously... Sending of the message failed. An error occured while sending mail. Outgoing server(SMTP error. The server responeded: +OKpop3ready -cma-kakadu03

There has been an assortment of messages with different errors. iinet has spent 2x 2 hr blocks trying to restore. They cannot... Last technician said leave it for a few days and it might resolve itself. It hasnt... I have closed 3 mailboxes permanently and am now looking to move from Thunderbird

Any suggestions you may have will be appreciated. I have been with Netspace/ iinet for 25years and Thunderbird for as long as i can remember. Never had this problem before Andrea

HI Again Went back to iinet technical foer another 1.5 hrs. They cant fix the problem. One of our netspace.net.au emails is back working. The other is not . They have the same outgoing server etc. Outgoing server changed to smpt.iinet.net.au Port 587 The one that is not working, is my personal email and I'm hoping not to change it ( I have transferred 3 work emails to gmail because of this issue) Still receives I cant send Email message.... Sending of the message failed. An error occurred while sending mail. The mail server responded: mf-505: Sender Policy - Relay Denied. Please verify that your email address is correct in your account settings and try again. I have removed the password and created a new one on iinet but not able to authorise Any help appreciated Andrea

Sender Policy - Relay Denied. Please verify that your email address is correct in your account settings and try again.

That error generally means the user account you connected to the server with is not the same as the email address you are sending from. Thunderbird has some rules about what account to reply from that can trip the unwary, like replying from the "default" account when using unified folders view.

Check that you have an outgoing server set up for each of your accounts in outgoing server (SMTP). Make sure each has a unique name (preferably including the email address so it is easy to determine what is what.

Then go to the incoming account and for each identity recorded (The page above the server settings in the list) ensure the correct email address (SMTP) is set for use with the identity.

When you click reply, confirm the correct identity (from address) is used in the compose window.

HI Matt Thanks for your help. I had already done all that. Today neither netscape email account is working on Thunderbird. My Gmail accounts still work. Ive had this email address for 25 years I dont touch anything. So its a surprise to me that it stopped one day.Everything from this end seems to be correct. I think I have to dump Thunderbird which is a hassle but also is a major effort as I'll lose all my folders etc I dont know what else to do. iinet suggested a technician but thats not the answer from where Im sitting.

I have also checked for malware, virus etc. The only thing I see that is possibly new to me is at the bottom of my emails there is a separate folder for outgoing servers as per screen shot. Each email has its own individual SMTP in its own account settings. Thunderbird changed appearance like it was a new upgrade ( the text was more was squishy) and I think this outgoing server box appeared. I presume which ever SMTP is checked overrides the rest.

When managing your identities you can use a server from this list by selecting it as the Outgoing Server (SMTP), or you can use the default server from this list by selecting "Use Default Server".

Any thoughts Andrea

When removing an account from Thunderbird, a dialog pops up asking whether you also want to delete messages data for that account. If you chose to NOT delete data, then your folders and messages are still on your computer's storage and you haven't lost them. They are just out of normal view. If you chose to delete them, then they are really gone unless you have a backup of your computer that you can restore them from. So, which option did you choose?

Now that you know you can safely remove an account without losing its messages data, you can remove and re-add the non-working personal account without fear. However, I don't think that's neccessary and I highly doubt that the problems with sending are caused by Thunderbird, simply because of all that's going on on your provider's side of things. I would wait until your personal account's migration to the new provider is complete before tinkering with Thunderbird further.

Since the account is receiving just fine, there's no need to remove the account from Thunderbird. Instead, you could just remove its SMTP server, since those are managed separately from the incoming server settings, then re-add only that without affecting incoming and already received messages.