authenticated users from different networks

Hi, I am currently allowing "trusted" network IP addresses to send/relay e-mail, as well as allowing SASL authenticated users to do the same from whichever IP address (but enforcing MAIL FROM to be username@mydomain). Both of these can send/relay e-mails to external domains. Now, I'd like to do t

Re: Sender restriction to reject message with multiple from addresses

On Wed, Oct 07, 2020 at 12:27:09AM +, Pau Peris wrote: > I'm hosting my dad's webpage which has a contact form (which should be > improved to avoid spam and/or bots) and from time to time someone > types multiple email addresses in the from field of the form so > contact emails with multiple f

Exception to login_mismatch with IP Whitelisting?

Postfix version: 3.1.1 Hello List! We have a customer with a setup of enforcing a match between account FROM address and sasl username. With the following this works as expected... smtpd_reject_unlisted_recipient = yes smtpd_reject_unlisted_sender = yes smtpd_sender_login_maps = proxy:ldap:/o

Re: Sender restriction to reject message with multiple from addresses

I'm hosting my dad's webpage which has a contact form (which should be improved to avoid spam and/or bots) and from time to time someone types multiple email addresses in the from field of the form so contact emails with multiple from addresses like "from: h...@example.com, f...@example.net" are ge

Re: Forward email based on Regexps

On 10/6/2020 3:56 PM, Frank DiGennaro wrote: Thanks for the reply. This is what I have in my 'virtual_users' file verbatim. I've even kept the domain names and users the same. # Regexp# User to forward to /\d{10,}@fax.mobilepbx.net/ asterisk (I

Re: Sender restriction to reject message with multiple from addresses

On 10/6/2020 6:52 PM, Pau Peris wrote: Hi, is there a sender restriction to reject a message with multiple from addresses? Which would be? Thanks, If you're seeing multiple addresses in a single From: header you may be able to carefully craft a header_checks to detect them, but detecti

Re: Forward email based on Regexps

Frank DiGennaro: > Thanks for the reply. This is what I have in my 'virtual_users' file > verbatim. I've even kept the domain names and users the same. > > # Regexp # User to forward to > /\d{10,}@fax.mobilepbx.net/ asterisk (I've tried both That is

Sender restriction to reject message with multiple from addresses

Hi, is there a sender restriction to reject a message with multiple from addresses? Which would be? Thanks, -- Pau Aquest correu electrònic conté informació de caràcter confidencial dirigida exclusivament al seu/s destinatari/s en còpia present. Tant mateix, queda prohibida la seva divulgació,

RE: Forward email based on Regexps

Thanks for the reply. This is what I have in my 'virtual_users' file verbatim. I've even kept the domain names and users the same. # Regexp# User to forward to /\d{10,}@fax.mobilepbx.net/ asterisk (I've tried both \d{10,} and [0-9]{10,} without s

Re: Accessing the sending user from a canonical(5) table

Demi M. Obenour: > On 10/6/20 12:46 PM, Wietse Venema wrote: > > Demi M. Obenour: > >> On 10/6/20 9:47 AM, Wietse Venema wrote: > >>> allow 'not found' users, similar to smtpd_sender_login_maps > >> > >> Would it be possible to make this configurable? The documentation > >> seems to imply that rej

Re: Accessing the sending user from a canonical(5) table

On 10/6/20 12:46 PM, Wietse Venema wrote: Demi M. Obenour: On 10/6/20 9:47 AM, Wietse Venema wrote: allow 'not found' users, similar to smtpd_sender_login_maps Would it be possible to make this configurable? The documentation seems to imply that reject_sender_login_mismatch considers ?not fo

Re: Forward email based on Regexps

Frank DiGennaro: > All; > > I've made progress with this problem. By adding virtual_alias_maps = > regexp:/etc/postfix/virtual_users at the bottom of main.cf and adding the > regexps below, and running "postmap /etc/postfix/virtual_users ", the two > catch-alls work fine, but the "longer" matc

Forward email based on Regexps

All; I've made progress with this problem. By adding virtual_alias_maps = regexp:/etc/postfix/virtual_users at the bottom of main.cf and adding the regexps below, and running "postmap /etc/postfix/virtual_users ", the two catch-alls work fine, but the "longer" matches do not and ultimately the

Re: Accessing the sending user from a canonical(5) table

Demi M. Obenour: Checking application/pgp-signature: FAILURE -- Start of PGP signed section. > On 10/6/20 9:47 AM, Wietse Venema wrote: > > Demi M. Obenour: > >> Patch (made against 3.5.7) attached. I lightly tested it locally and > >> it seems to work, but there could very well be bugs. I am vi

Re: postscreen seqfaults with abusix rbl

On 06/10/2020 00:05, Wietse Venema wrote: > John Fawcett: >> Actually to be more precise: is it guaranteed to return not null and >> with all the function pointers in the returned dict struct also not >> null. I'm adding this because I think it does always return something >> not null, but I'm not

Re: Accessing the sending user from a canonical(5) table

On 10/6/20 9:47 AM, Wietse Venema wrote: Demi M. Obenour: Patch (made against 3.5.7) attached. I lightly tested it locally and it seems to work, but there could very well be bugs. I am virtually certain that I violated the Postfix coding style somewhere, sorry. I can also send the patch inline

Re: Accessing the sending user from a canonical(5) table

Demi M. Obenour: Checking application/pgp-signature: FAILURE -- Start of PGP signed section. > On 10/5/20 6:15 PM, Wietse Venema wrote: > > Demi M. Obenour: > >> There was a recent vulnerability in OpenBSD due to libc malfunctioning > >> in a set-uid-root program under very low resource limits. I