AW: Catch a forged Return Path

2021-02-06 Thread ludicree
Hi, >Does Plesk not give you access to the main.cf file? How do you configure >postfix at all? Plesk does rewrite the main.cf file (and possible others) upon changes in the GUI or updates. Not everything gets thrown out, but quite some lines revert to a Plesk default. It is not bad when it is

AW: Catch a forged Return Path

2021-02-06 Thread ludicree
Hi, >On 6/02/21 2:23 am, Matus UHLAR - fantomas wrote: >> while I support using postscreen, I'm not sure it would be able to >> catch backscatter, becsuse backscatter often comes from servers who >> properly follow SMTP RFCs. >The question here is whether this is really backscatter, or just spa

AW: Catch a forged Return Path

2021-02-04 Thread ludicree
Hi, >>Return-Path: >> >>to disguise as a bounce and bypass any further checks. >> >>So the PCRE header check >> >>/^Return-Path: / REJECT Forged Return-Path >> >>does not catch. >are you sure it's a Return-Path header? >usually, envelope sender is put to Return-Path, so you may need to b