Configuring and Managing MPE/iX Internet Services (August 2002)

Chapter 10

Sendmail for MPE/iX

MPE/iX Implementation Issues

203

MPE/iX Implementation Issues

The following Sendmail features have not been implemented on MPE/iX:

• LDAP support

• TLS/SSL encrypted e-mail transport

• SASL secure authentication

• Mail filtering

• Optional chroot()-based security features

• Optional nice()-based dispatching priority adjustments

The following Sendmail features work a bit differently on MPE/iX than they do on other operating systems:

• Sendmail programs that read terminal input by using stdin will echo one character per line and not

recognize CR characters or :EOD properly. The workaround is to redirect stdin to either a pipe or a disk

file, i.e.,:

shell/iX> /bin/cat - | makemap hash mymap

shell/iX> makemap hash mymap <diskfile

• Sendmail’s “background” DeliveryMode on MPE/iX is actually a hybrid between “background” and

“interactive”. A background process will be started to deliver the mail, but if it has not finished by the

time the parent process is ready to terminate, the parent process will wait for the background process to

finish.

• Symlinks such as /SENDMAIL/CURRENT/bin/mailq that point to the main Sendmail NMPRG must be

invoked from the POSIX shell in order to work properly because invoking them from the CI doesn’t

initialize ARGV[0] with the name of the symlink. If you need to invoke this symlinked functionality from

the CI, you will have to specify the Sendmail parameters that invoked the desired functionality, i.e., :XEQ

/SENDMAIL/CURRENT/SENDMAIL -bp.

• The newaliases utility will complain that it cannot alter the ownership of /etc/mail/aliases, but this

warning can be ignored if you are always logged on as SERVER.SENDMAIL when doing maintenance,

i.e.,:

:HELLO SERVER.SENDMAIL

:XEQ SH.HPBIN.SYS –L

shell/iX> newaliases

no fchown(): cannot change ownership on /etc/mail/aliases

/etc/mail/aliases: 2 aliases, longest 15 bytes, 48 bytes total