[fetchmail-devel] [Feature #4790] apply antispam to RCPT TO

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Feature Request #4790, was updated on 2009-Sep-25 10:41
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Category: None
Status: Open
Priority: 5
Summary: apply antispam to RCPT TO

By: seanster
Date: 2009-Sep-25 10:41

Message:
Logged In: YES 
user_id=53384
Browser: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20090923 (.NET CLR 3.5.30729)

It appears that the antispam option only applies to
results from MAIL FROM.

It would be desirable to have it also apply to RCPT TO:

The reasoning here is that the spam decision is not
completed until I know who you want to send to.
For example I may have a postmaster account that allows
non-resolvable domains and allows me to help
troubleshoot nameserver problems. All other accounts on
my server reject non-resolvable domains.

I can't imagine I am special in any way.

Consider this smtp exchange between fetchmail and my
local sendmail:

SMTP> MAIL FROM:<tenak@123-4f47685e57d> BODY=7BIT SIZE=1459
SMTP< 250 2.1.0 <tenak@123-4f47685e57d>... Sender ok
SMTP> RCPT TO:<a_valid_user@localhost>
SMTP< 553 5.1.8 <a_valid_user@localhost>... Domain of
sender address tenak@123-4f47685e57d does not exist

As you can see, I'm reporting that I don't like the
sender, but only after they tell me who they want to
send to.

At the moment, to force cleaning out those dead
messages from my pop accounts, I use the "set no
softbounce" option. That's really dangerous as there's
other possible permanent errors where I would choose to
keep the mail in the pop account. Using antispam would
allow me to choose.

I'm not a fetchmail or sendmail guru. I realise I could
just be doing something wrong. I'm happy to discuss
this with anyone.


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