Am 19.04.2024 um 12:21:47 Uhr schrieb Sebastian Arcus via mailop: > I would have to look further into this, but I was under the > impression that Exim uses the VRFY command for callout verification?
Most sites have disabled that, and implementations of Exim are known that use RCPT TO. Stop using this feature will most likely stop being listed there. The reason is explained here: http://www.backscatterer.org/?target=sendercallouts If you need a similar service, do strict SPF and DKIM checking. -- kind regards Marco Send unsolicited bulk mail to 1713522107mu...@cartoonies.org _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
