Tanstaafl <tansta...@libertytrek.org> writes: > On 11/15/2016 6:11 PM, Bill Cole > <postfixlists-070...@billmail.scconsult.com> wrote: >> Be aware that if you use reject_unknown_helo_hostname you will have a >> steady stream of cases for which you will have to make special >> exceptions. How steady that stream is depends more on your volume and >> diversity of legitimate mail than on how heavily spammed you are. > > What Bill is saying here is using reject_unknown_helo_hostname to > outright reject clients will reject legitimate clients, so unless you > have a good reason for doing so and know what you are doing and are > prepared to handle issues like you are experiencing now, or don't do it.
Okay, thanks for all the responses. First of all, sorry for not specifying this at the beginning: smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, check_helo_access regexp:/etc/postfix/helo_access, reject_invalid_helo_hostname, reject_unknown_helo_hostname I had been under the impression that rejecting unknown hostnames was a fairly normal thing to do (on my low-usage server, I've only had to add two exceptions). If it isn't, I'll just take it out, I'm not set on using it. Thanks for the link, Louis. Eric
