I like to use extended email addresses, or aliases I can make up on the fly. I mean addresses like [email protected] When someone wants my email address, I make up one which represents the company that asked for it. That way if I get spammed, I can filter that out, and I know who did it. For example, if I subscribe to the ABC newsletter, I can give them my email address as [email protected] and the newsletters will be delivered to [email protected] I tried to modify the postfix and courier config files, but this did not work. But I found its incredibly easy to add an Email --> Global Filters --> Content Filter to do the job through ISPC3. Example: Set Pattern to: /^.*USER[+-].*@YOURDOMAIN.COM.*$/ and Action to REDIRECT and Data to [email protected] This will accept either + or - as the delimiter. I hope this is useful for someone.
I used to create a new alias for it, but this is much easier! thanks for sharing! edit: i'm having trouble setting this up .. I did the following: E-Mail -> Global Filters -> Content Filter -> Add New.. Filter: Header filter Regexp Pattern: /^.*signup\-.*@my\-domain\.tld.*$/ Data: [email protected] Action: REDIRECT Code: <[email protected]>: host mail.my-domain.tld[1.2.3.4] said: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in virtual mailbox table (in reply to RCPT TO command)
Mark, I think the pattern should be /^.*signup-.*@my-domain\.tld.*$/ or /^.*signup-.*@my-domain.tld.*$/
I've been debugging the postfix (smtpd) process and I noticed I never see it do the header checks There was no point in the complete debug trace where I could find it does a header_check with the header check file being used. Only saw mysql:/*.cf files being accessed, rbl checks etc etc. I even added "-v" to all processes in master.cf to see what happens, still no results.
- Do you use ISPConfig 3.0.3.3? - Does postfix main.cf has this line: header_checks = regexp:/etc/postfix/header_checks - Does the file /etc/postfix/header_checks contains the header filter that you created in ispconfig?
Ofcourse I run the latest version of ispconfig ;-) yes that line is in main.cf The header_checks file contains the filter that i added in the ispconfig web GUI.
Ok Postfix uses a bunch of processes to handle email, so I'am not sure if the smtpd process is the right process to monitor: http://www.postfix.org/BUILTIN_FILTER_README.html Postfix has also debugging functions, this might be better then trying to use trace to see which process reads which config file. Config files can be read once at startup by the master process etc. http://www.postfix.org/DEBUG_README.html
I've tried adding "-v" to all processes in master.cf without results. I'll give the extensive debugging a try. edit: cleanup(8) also does the virtual_maps through virtual(5) .. i do see the virtual map lookups in the debug info, but no header checks
Mark, On my Centos 6, ISPC3 system, postfix writes header check errors to the /var/log/maillog file. Example from my maillog: Oct 18 23:55:30 fire postfix/cleanup[9982]: warning: regexp map /etc/postfix/header_checks, line 8: ignoring unrecognized request This error caused by Pattern: OverstockAuction Action: DISCARD
