Archive for the ‘Exim’ Category
A few days ago I noticed a large number of message delivery failures to a Domino server. They were all similar:
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
j.jolie@domino.example.com
SMTP error from remote mail server [...]
When I first heard of the requirement at a customer site that a rather large number of users must not receive mail on two days of the week my initial thoughts were unprintable but went along the lines of lunacy and WTF. (Meanwhile I know there are actually sound reasons, but I won't elaborate.)
The difficulty [...]
A request on the Exim mailing list tickled my interest: the poster wanted to have Exim expand a posixGroup to a list of the member's e-mail addresses.
As a reminder, an RFC 2307 posixGroup has a multi-valued LDAP attribute type called memberUid which is the user identifier (uid) of the member. A sample groups looks like [...]
A user of one of our small and distant mail servers reported "missing e-mails" this morning. It turns out they weren't missing (of course), but I'd had them misplaced.
When we set up the mini mail servers, I'd taken most of Exim's configuration from the original IMAP design, and in that, I had set [...]
A new version 4.70 of the Exim Mail Transfer Agent is on the horizon:
A lot of stuff has accumulated in CVS since January 2008. Since we want to give the current code some wider exposure, please accept this invitation to test a 4.70 pre-release.
Apart from a number of small fixes, this release has some exciting [...]
There's no doubt that e-mail is a vital component in business today, and as such we pay particular attention to our e-mail infrastructure.
We use dedicated systems as Mail Transfer Agents, of course, and run Exim on those, with as little ballast as possible. What we do though, is to give each MTA its own DNS [...]
heise Netze has an updated article (in German) on how to monitor your own server's existance on a DNS black-list (DNSBL) with Nagios. (Icinga will work just as well, of course.)
The script is simple enough, and should pose no problem getting that into Nagios. It is also very easy to add or remove DNS [...]
Wan't to pop off a quick e-mail on your laptop? Are you on a train, in a hotel, at a customer site, or at home? Depending on your location, you may want to use a distinct smart host for getting your e-mail off your device.
Improving on an answer I gave on the Exim mailing-list the [...]