On Mon, 14 Sep 2020, Philipp Ewald wrote:
Does anyone else checks the HELO/ELHO?
I don't check for FCrDNS explicitly, but I do reject non-FQDN HELO strings (e.g. no dots present) from the Internet. That catches a surprising percentage of garbage up front.
-- John Hardin KA7OHZ http://www.impsec.org/~jhardin/ jhar...@impsec.org pgpk -a jhar...@impsec.org key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79 ----------------------------------------------------------------------- If asking Hillary to disarm is a call for her assassination, then asking the American people to disarm is calling for their genocide. -- Jeff Ingebritson ----------------------------------------------------------------------- 3 days until the 233rd anniversary of the signing of the U.S. Constitution
