Some contacts however know a different … Firewall rules blocking port 25 etc would stop their email arriving. Rewrite sender address in postfix - LinuxQuestions.org But if I however send an email to myuser@myowndomain.comit will be send straight to the correct user. Instead, send an email report after verifying each recipient address. Postfix smtp_generic_maps implementation; The … But if I however send an email to myuser@myowndomain.comit will be send straight to the correct user. This requires that we have a domain e.g. Smtp host. -C config_file-C config_dir The path name of the Postfix main.cf file, or of its parent directory. Hi all, We have a client who hosts a domain with us with a … By default the canonical (5) mapping affects both message header addresses (i.e. Set the parameter … DevOps & SysAdmins: Postfix: Modify sender address based on … Hi, since I started using mail addresses with an extension, it lately happened that I forgot to choose the "right" address for sending out mail. smtp_generic_maps implementation; The sender/recipient_canonical approach is kind of a "deprecated" approach which can lead to wrong configurations. In this article we will setup postfix to send email via an external smtp server and ask cron to send emails on failed jobs. Mit Postfix Multi Instance wäre die Lösung trivial. Example 4: Drop all Easy Auditor Report emails. I was in a situation where I needed to implement a mail routing policy: Outgoing email from a specific domain gets routed through a relay (eg. It is configured, to use gmail to send mails. to 192.168.8.8 (the square brackets disable MX/DNS lookups). canonical_maps = hash:/etc/postfix/canonical. If we > can imagine that the recipient will always … This feature is available in Postfix version 2.1 and later. It needs to be a filter based on 1) the email recipient domain name, and 2) a specific list of IP addresses. You could set your sender address to impersonate anyone. So, I, ahem, “forgot” to change sender address on one of our servers the other day which resulted in a bunch of undeliverable mails on the … In detail I have a couple of defined addresses … Postfix That one I fixed, though, with smtp_generic_maps, rewriting the sender adress to a valid one. Permanently reject a specific email sender address using postfix