Yes I can send successfully individually but, with about 150 contacts, it’s a pain to have to do that with the same message.
In addition (don know if it’s related or not), I notice that I’m getting an intermittent “! within a triangle” symbol appearing against my Virginmedia inbox, with an accompanying message “unable to read imap.virginmedia.com”. This goes away but keeps coming back intermittently, and is only a problem with the virginmedia account.
As a temporary workaround, using VM Webmail should allow you to send up to 500 emails before your account is temporarily disabled. That should be enough to inform all your contacts of your new email address.
That's providing you have do have access to your address book in Webmail of course.
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Consider how a single message to multiple email addresses works.
Email transaction works like this, I'm going to deal with the client side only at first and I'm going to ignore authentication.
1. Client sends HELO/EHLO 2. Client sends MAIL FROM: <sender address> 3. Client sends RCPT TO: <recipient address> 4. repeat 3 until no more recipients 5. Client sends email
At each stage the server responds either with 2xx indicating success OR with an error code (4xx - temporary error or 5xx - permanent error)
If we get an error code from ANY of the RCPT TO: commands - then the whole email send is aborted BEFORE the email is actually sent
So - it only takes 1 of the 150 contacts in your contact list to cause this problem.
Edit - When was the last time you cleaned your contact list? A number of domains have closed, and as such may have been added to a list of domains that should not be sent emails to under any circumstances.
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