If it
finds a duplicate, it prints the following message and skips the new address:
addr in sendq: output of printaddr( ) here (?§15.3 on page 533)
Here, addr is the duplicate address. Information about that address is produced with the
printaddr( ) routine.
15.7.30 -d27.1
Trace aliasing Debug command-line switch
The -d27.1 (a.k.a. -d27) debugging switchcauses sendmail to print eachstep it takes when
processing local addresses through aliasing. First, sendmail prints the addresses being
aliased:
alias(addr)
Here, addr is the address (usually a local username) that is about to be aliased. Note that it
can already be the result of previous aliasing. If the addr can be aliased, its transformation
is printed as:
addr (host, user) aliased to newaddr
Here, addr is the address before aliasing, and the newaddr is the new address that resulted
from successful aliasing. The host and user are the hostname and username from the recipient
part of the envelope. If the addr cannot be aliased, nothing is printed.
During initialization, if the aliases database cannot be opened, the -d27.1 debugging switch
causes sendmail to print:
Can't open aliasfile
Here, aliasfile is the full pathname of the aliases(5) file, as declared by the AliasFile option
(?§24.9.1 on page 970) or implied with the service-switch file set by the ServiceSwitchFile
option (?§24.
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