greylist_delay configurable

[strehi]

Hi,

is it possible to make $greylist_delay in pmgpolicy configurable? I think 3 min is too short.
So it would be nice, to configure that.

TIA
Bernd

 

[Stoiko Ivanov]

Currently this is hardcoded - and currently I don't see a situation where making this configurable would help:
* Greylisting is meant to catch spam, that is sent by a one-shot script instead of being queued on a SMTP server for delivery - these scripts try to send the mail only once, and don't bother retrying on seeing a 4xx temp-fail code
* Greylisting will not help to catch spam, which somehow was queued on a smtp-server (if for example the spammers are using postfix/exim/exchange for sending spam)
* Do you have an example of a spam-mail, which got retried after a few minutes, but would not have been retried after say 1h?

 

[strehi]

Currently this is hardcoded - and currently I don't see a situation where making this configurable would help:
* Greylisting is meant to catch spam, that is sent by a one-shot script instead of being queued on a SMTP server for delivery - these scripts try to send the mail only once, and don't bother retrying on seeing a 4xx temp-fail code
* Greylisting will not help to catch spam, which somehow was queued on a smtp-server (if for example the spammers are using postfix/exim/exchange for sending spam)
* Do you have an example of a spam-mail, which got retried after a few minutes, but would not have been retried after say 1h?

In my old setup I was at 10 min for the greylist delay. Over the last month there:

[....]
Of 144060 items that were initially greylisted:
- 40160 ( 27.9%) became whitelisted
- 103900 ( 72.1%) expired from the greylist

With three min on the pmg it is down to 25% not passed and 75% passed. Not sure
why, but I'm starting to investigate. Next I'll try with hardcoded 10 min.

Bye
Bernd