It all depends on how the recipient's mail server is set up. There's a whole range of filters that
can be set - including a reverse lookup. They can also be set to silently discard any emails which fail the lookup, or they can be set to send a message to the sender.
When I was admin of a mail server a couple of years back, I had it set to silently discard emails which failed the reverse lookup - mainly because sending a message back to the sender, whose address didn't seem to exist, mostly resulted in another email to me telling me that my 'bounce' email was undeliverable because the address didn't exist - which I already knew from the reverse lookup.
Can Mrs B send emails using Supanames's webmail facility (
http://webmail.supanames.com/index.pl)? If yes, double-check your settings in Outlook Express, especially port numbers (SMTP is usually 25 and POP is port 110, but if encrypted connections are used, the POP port will probably be 995, but the SMTP port could be anything), the authentication checkbox and id/password details (if needed).
One final thing - AOL isn't involved anywhere in this problem, is it? AOL is a major headache where mail from third-party hosts are concerned. They blacklist a whole domain if a spammer has set up an account anywhere on that domain and their (AOL's) precious customers have been put through the inconvenience of having to click "Delete".
Check your PMs - I've sent my works email address. We have no filters on there at all. If Mrs B's emails are getting out, I will receive it. I will be at work tomorrow (Monday) as I'm now in the land of the free and don't have Bank Holidays anymore.
