avoid external emails that the from=< and the to=< are the same user

2018-11-16 Thread Francesc Peñalvez
Lately we are receiving spam mails that apparently the mail from the and the to is the same. How is it possible to avoid this?. I have configured postfix to avoid the relay of emails and to be able to send mail through my postfix is necessary the auth , these emails are sent externally from

Re: rejecting 'nested' from address ?

2018-11-16 Thread Voytek
On Sat, November 17, 2018 12:01 am, Wietse Venema wrote: thanks ! >> or where ? to reject/block ? > > /etc/postfix/sender_pcre: > /@.*@/ reject > > > /etc/postfix/main.cf: > smtpd_sender_restrictions = check_sender_access > pcre:/etc/postfix/sender_pcre I currently have as so, add as 1st

Re: avoid external emails that the from=< and the to=< are the same user

2018-11-16 Thread Dominic Raferd
On Fri, 16 Nov 2018 at 13:20, Francesc Peñalvez wrote: > > Lately we are receiving spam mails that apparently the mail from the and > the to is the same. How is it possible to avoid this?. I have configured > postfix to avoid the relay of emails and to be able to send mail through > my postfix is

rejecting 'nested' from address ?

2018-11-16 Thread Voytek
a user started getting many spam/malware with like 'nested' from: <"mick@cinkmedia.comgeranc"@gmail.com> <"m...@cinkmedia.com.abc"@expertsmeetings.org> I'm waiting for a full header from him, can anything be done in Postfix ? or where ? to reject/block ? V

Re: rejecting 'nested' from address ?

2018-11-16 Thread Wietse Venema
Voytek: > a user started getting many spam/malware with like 'nested' from: > > <"mick@cinkmedia.comgeranc"@gmail.com> > > <"m...@cinkmedia.com.abc"@expertsmeetings.org> > > I'm waiting for a full header from him, can anything be done in Postfix ? > or where ? to reject/block ?

Re: rejecting 'nested' from address ?

2018-11-16 Thread Wietse Venema
Voytek: > On Sat, November 17, 2018 12:01 am, Wietse Venema wrote: > > > thanks ! > > >> or where ? to reject/block ? > > > > /etc/postfix/sender_pcre: > > /@.*@/ reject > > > > > > /etc/postfix/main.cf: > > smtpd_sender_restrictions = check_sender_access > > pcre:/etc/postfix/sender_pcre

Re: avoid external emails that the from=< and the to=< are the same user

2018-11-16 Thread Wietse Venema
Francesc Pe?alvez: > Lately we are receiving spam mails that apparently the mail from the and > the to is the same. How is it possible to avoid this?. I have configured > postfix to avoid the relay of emails and to be able to send mail through > my postfix is necessary the auth , these emails

RE: looking for any options to better deal with mail looping

2018-11-16 Thread Fazzina, Angelo
Hi again, Even though my configuration does what I need it to do, it seems to have broken something else that needs to still work. Did I forget something or just did this wrong ? Will this setting allow whitelisting something to help the issue "smtpd_sender_restrictions" I maybe just confusing

Re: looking for any options to better deal with mail looping

2018-11-16 Thread Noel Jones
On 11/16/2018 2:41 PM, Fazzina, Angelo wrote: > Hi again, > Even though my configuration does what I need it to do, it seems to have > broken something else that needs to still work. > Did I forget something or just did this wrong ? > Will this setting allow whitelisting something to help the