The mail sender is a user agent (Mail User Agent, MUA) with which you can send data in BS2000 as e-mails.
The BS2000 mail sender allows you to do the following:
Send automated lists as e-mails to the local mail server in POSIX or to remote mail servers from within BS2000 procedures.
Send notifications in error situations.
Send text or binary files from within BS2000.
Specify transfer encoding (7- and 8-bit encoding, quoted-printable encoding and Base64 encoding).
Specify To, Cc and Bcc recipients.
Specify additional conversion tables for national character sets.
Send e-mails to the SMTP server over an SMTP connection secured with TLS.
Encrypt and sign e-mails correctly in accordance with the S/MIME standard.
Send e-mails asynchronously.
The last function in the above list is based on the BS2000 subsystem ASTI (Assistant for Service Task Integration). The frontend of the mail sender, which is implemented as the DSSM subsystem MAILCLNT, receives the e-mails at the SDF command, SVC or TPR interface and creates e-mail orders that it transfers to ASTI. The mail sender backend is a TU service task that receives the e-mails from ASTI and forwards them to a mail server over an SMTP connection.
The figure below shows the position of the mail sender and how it interacts with the other mail services in BS2000.
Figure 9: Mail sender in BS2000
This chapter provides information on the following:
The configuration file for the mail sender frontend (user option file)
The SDF interface of the mail sender frontend
The macro interface of the mail sender frontend