Hi! Currently i'm in contact with someone who has the helo set to an invalid hostname. Mails from their system are therefor rejected by my mailserver beacuse i have:
smtpd_recipient_restrictions = reject_invalid_helo_hostname reject_unknown_helo_hostname reject_non_fqdn_helo_hostname They have "internal reasons" for it. So my question is: Are there any reasonable reasons to have an invalid helo hostname or should i relax my settings? Sascha
