Sam Varshavchik wrote:
OK, so the filters are run for every locally delivered message. But can I whitelist some recipients unconditionally, no bloclists applied, or do I have to use BLOCK2. In the latter case, how do I get the corresponding text, what courier returns as the description of the 5xx, so I can print it.Martijn Lievaart writes:
Sam Varshavchik wrote:
Jeff Potter writes:
Hi All,
I'm wondering if there's any way that Courier can do this:
1. Receive a message on SMTP
2. After getting ".<CR><LF>", but before responding "250 Ok"...
3. Attempt to deliver the mail: if there are delivery instructions in a .courier file, run them.
4. If one of the delivery instructions generates a hard error, on the SMPT layer respond with "5xx Unable to deliver message, local delivery instructions failed."
I know that Courier can check if dash-extension addresses are existent if the homedir is o+rx, but what I'm hoping is that this can be extended to actually *running* the users delivery instructions so that any DSNs that do get generated, get generated out the SMTP layer so that invalid from addresses don't cause double bounces to my local postmaster account.
Doable?
There's a similar facility that provides for executing a restricted maildrop recipe, which can examine the message's contents, and selectively accept or reject the message.
It's rather difficult/tricky to set up.
Begin by reading the localmailfilter man page. All of it. Paragraph by paragraph.
I looked at this previously and it does not seem to fit my bill completely.
Can I whitelist postmaster@ and abuse@ unconditionally? Or does "accept
Each recipient address installs its own filter.
message onconditionally" only apply to the contentfilter but blocklists are still applied? I think the latter, as blocklists are applied earlier in the SMTP phase.
If I understand the manpage correct, these filters are not run for messages submitted on the MSA port?
These filters are run for any message addressed to a local mailbox.
M4
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