TAB ('something.tab') files are text files (in the sense meant by the OS in use: <CR><LF> for NT and <CR> for Linux) with this format:
"value1"[TAB]"value2"[TAB]...[NEWLINE]
The following sections explain each file's structure and use.
ALIASES.TAB
ALIASDOMAIN.TAB
DOMAINS.TAB
DNSROOTS
EXTALIASES.TAB
MAILUSERS.TAB
MESSAGE.ID
POP3LINKS.TAB
SERVER.TAB
SMTPGW.TAB
SMTPFWD.TAB
SMTPRELAY.TAB
SMTPAUTH.TAB
SMTPEXTAUTH.TAB
USERDEF.TAB
CTRLACCOUNTS.TAB
SPAMMERS.TAB
SPAM-ADDRESS.TAB
POP3.IPMAP.TAB
SMTP.IPMAP.TAB
CTRL.IPMAP.TAB
FINGER.IPMAP.TAB
USER.TAB
MLUSERS.TAB
MAILPROC.TAB
SMTP.IPPROP.TAB
SMTP.HNPROP.TAB
FILTERS.IN.TAB
FILTERS.OUT.TAB
FILTERS.POST-RCPT.TAB
FILTERS.PRE-DATA.TAB
FILTERS.POST-DATA.TAB