Re: Complaints due to helo restrictions

2016-09-14 Thread Nikolaos Milas
On 13/9/2016 8:52 μμ, Wietse Venema wrote: I'd use none of these. Thank you all for your feedback. Following Wietse's advice, I have removed these directives from the config. All the best, Nick

Re: Complaints due to helo restrictions

2016-09-13 Thread Wietse Venema
Nikolaos Milas: > Sep 8 09:35:37 mailgw1 postfix/smtpd[18791]: NOQUEUE: reject: RCPT from > mail.ipta.demokritos.gr[143.233.230.2]: 450 4.7.1 : Helo > command rejected: Host not found; > from= to= proto=ESMTP > helo= I don't recommend using reject_unknown_helo_hostname, because there are many

Re: Complaints due to helo restrictions

2016-09-13 Thread Jeremy T. Bouse
On 9/13/2016 1:16 PM, Nikolaos Milas wrote: > Hello, > > We are running postfix v2.11.0 on CentOS 6.8 as a gateway server and > we have recently imposed helo restrictions. > > Few servers have problems sending us mail due to the helo restrictions: > > Sep 8 09:35:37 mailgw1 postfix/smtpd[18791]: N

Re: Complaints due to helo restrictions

2016-09-13 Thread Bastian Blank
On Tue, Sep 13, 2016 at 08:16:30PM +0300, Nikolaos Milas wrote: > We have notified them that their helo answer is different than their > mail server name / FQDN (so as to change it) and they say that we > should not be restricting access due to this: > > "The HELO receiver MAY verify that the HELO

Complaints due to helo restrictions

2016-09-13 Thread Nikolaos Milas
Hello, We are running postfix v2.11.0 on CentOS 6.8 as a gateway server and we have recently imposed helo restrictions. Few servers have problems sending us mail due to the helo restrictions: Sep 8 09:35:37 mailgw1 postfix/smtpd[18791]: NOQUEUE: reject: RCPT from mail.ipta.demokritos.gr[143