今まで、日本のメルアドをそのまま使っていて、それは問題ないのですが、先日プロバイダーを　TelusからShawに変えました。そうしたら、アウトルック上でメールは受信できるのですが、送信が出来なくなってしましました。Shawに問い合わせたところ、SMTP Server か又は、Sending Serverに所定のShawmailのアドレスを入力するように言われました。済みませんが、どのようにしたらSMTP Serverへいけるのでしょうか？どなたか教えて下さい。

The objective of Simple Mail Transfer Protocol (SMTP) is to transfer
mail reliably and efficiently.

SMTP is independent of the particular transmission subsystem and
requires only a reliable ordered data stream channel. Appendices A,
B, C, and D describe the use of SMTP with various transport services.
A Glossary provides the definitions of terms as used in this
document.

An important feature of SMTP is its capability to relay mail across
transport service environments. A transport service provides an
interprocess communication environment (IPCE). An IPCE may cover one
network, several networks, or a subset of a network. It is important
to realize that transport systems (or IPCEs) are not one-to-one with
networks. A process can communicate directly with another process
through any mutually known IPCE. Mail is an application or use of
interprocess communication. Mail can be communicated between
processes in different IPCEs by relaying through a process connected
to two (or more) IPCEs. More specifically, mail can be relayed
between hosts on different transport systems by a host on both
transport systems.
　

shawmail
　

http://support.shaw.ca/customercare/emailconfiguration.htm
　

ありがとうございました。問題解決しました。Thank you very much.