I don't understand the need for 48 or any carrier to provide an SMTP server.
I can send mail fine on 48 using Hotmail, Gmail and other mail services - not using webmail but using the Android mail client (or K9 Mail which I use these days).
Surely that's an issue for eircom so - not for 48?
You mean an SMTP server for sending email using a carrier provided email address (e.g. email@example.com or something like that)?
Now an update from Apple support:
Thank you for contacting Apple James.
SMTP server would be just to allow you to send mail while using 48, not a email address @48.ie just a outgoing mail server.