When sending mail from a host behind NAT, you will run into trouble when the "From" says "email@example.com", because receiving servers will refuse that domain.
By halfgaar, 9 months ago, on June 03, 2016, at 11:06 |
When you want to use your IMAP account as authentication for Postfix, you can set the SASL mechanism to "rimap". However, by default, it will not supply the realm (domain) and therefore will authenticate with an incomplete username (john instead of firstname.lastname@example.org).
By halfgaar, 4 years ago, on April 23, 2013, at 17:04 |
These are some short stepts and pointers to setup a postfix fallback MX. It does not describe postfix basics, nor how to install Mailscanner (a necessisity, because spammers like sending spam to fallback MX's because they're usually not as well protected).
By halfgaar, 6 years ago, on May 22, 2011, at 09:05 |
I always seem to forget this, and the mailq command is not clear, so here it is: when you type mailq on a postfix server, the first address listed is the sender, the second the recipient.
By halfgaar, 6 years ago, on May 04, 2011, at 11:05 |
(Hmm, this suggests the python version might be better).
By halfgaar, 6 years ago, on April 28, 2011, at 15:04 |
Some useful commands when working with a postfix mailqueue: "postsuper -r ALL". Requeues all messages. "postcat [file]". Views queue files in /var/spool/bla. "postqueue". Deal with queue.
By halfgaar, 6 years ago, on September 22, 2010, at 14:09 |
I used this document as main source. This blogpost is also useful.
By halfgaar, 6 years ago, on September 20, 2010, at 16:09 |
I needed to fetch mail from a POP3 account and deliver it to a Zimbra account. Because I'm doing this for multiple POP3 accounts, I want to add a header which I can use in Zimbra to filter. This is what we made:
By halfgaar, 7 years ago, on January 17, 2010, at 20:01 |
(This turned out not to be how I fixed it. I just configured exim and /etc/mailname as I do always and that fixed it. However, exim does not run as the SMTP server listening on port 25, that is the postfix installed by Zimbra. I don't know how and if this exim configuration conflicts with zimbra.)
By halfgaar, 7 years ago, on January 12, 2010, at 16:01 |