Ruby On Rails ActionMailer - emails not being delevered

Hello

I've been dipping my toe in the RubyOnRails waters but have come unstuck trying
to send an email using ActionMailer through my ISPs SMTP servers (Plusnet). I can
see the email being rendered in the log file using the Actionmailer configuration
setting below, however the email isn't received to any email accounts.

Setting the authentication to either "login" or "plain" with my standard Plusnet
username & password caused a error message of "535 Incorrect authentication
data". Sending email from an email client (outlook) only requires the address
relay.plus.net, password and username is only needed to collect email from POP
accounts.

Using other SMPT gateway (which I don’t have permission or usernames\passwords
for) throws up different errors, so ActionMailer is trying to send mail and
talking to the SMTP servers.

If you have managed to get ActionMailer / ROR to send an email using a standard
ISP SMTP how did you manage it? Where am I going wrong? Does RubyOnRails have any
other tests I can carry out to make sure the email is leaving my PC.

I’d be really grateful for any help

Thanks a lot.

Ben

rails at redbed dot plus dot com