similar to: Scalability of Dovecot in the Cloud

> On Feb 21, 2017, at 11:12 PM, Christian Balzer <chibi at gol.com> wrote: > > On Tue, 21 Feb 2017 09:49:39 -0500 KT Walrus wrote: > >> I just read this blog: https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/

thanks for your help happy to say that the performance dramatically improved after i use the high performance settings from here http://wiki.dovecot.org/LoginProcess grep Login: /var/log/mail.log.1 |wc -l with the mail.log being of a typical, busy day. 412992 i also picked up the imap and pop3 connections during peak hours [root at ns1 domains]# doveadm who | awk

> On May 10, 2017, at 9:50 AM, Sami Ketola <sami.ketola at dovecot.fi> wrote: > > >> On 9 May 2017, at 19.26, KT Walrus <kevin at my.walr.us> wrote: >> >> Is ?doveadm save? an undocumented feature? Or, just well-hidden? >> >> https://wiki2.dovecot.org/Tools/Doveadm <https://wiki2.dovecot.org/Tools/Doveadm> > > That wikipage is

> 1. 256GB of real RAM, swap is for chums. Are you sure that 100,000 IMAP sessions wouldn?t work well with SWAP, especially with fast SSD storage (which is a lot cheaper than RAM)? Seems that these IMAP processes are long lived processes (idling most of the time) that don?t need that much of the contents of real memory available for much of the life of the process. I use a database proxy in

> On Jun 17, 2016, at 8:01 PM, chaouche yacine <yacinechaouche at yahoo.com> wrote: > > I'm also interested in learning how to do this best. Last time I thought about it is if users have a different e-mail address on the archive server, you can setup a BCC map in postfix that matches the pair of emails (primary email - archive email), this will automatically send all sent

> On Aug 20, 2017, at 11:52 AM, Stephan von Krawczynski <skraw at ithnet.com> wrote: > > On Sat, 19 Aug 2017 21:39:18 -0400 > KT Walrus <kevin at my.walr.us> wrote: > >>> On Aug 18, 2017, at 4:05 AM, Stephan von Krawczynski <skraw at ithnet.com> >>> wrote: >>> >>> On Fri, 18 Aug 2017 00:24:39 -0700 (PDT) >>> Joseph

> I would love to know why your ubuntu 14.04 system doesn't support sha512-crypt. I just tried SHA512-CRYPT and it is supported on Ubuntu 14.04. I think I was thinking about DBMail instead of Dovecot. I could really use support for BLF-CRYPT since my current password hashes generated by PHP are using Blowfish encryption. Maybe, Dovecot could just add support for BLF-CRYPT by using the

>> Maybe, Dovecot could just add support for BLF-CRYPT by using the open source implementation of Blowfish hashing found in https://github.com/php/php-src/tree/master/ext/standard <https://github.com/php/php-src/tree/master/ext/standard>. The implementation looks like a single function to generate the hash. I?m not much of a programmer, but it would seem to me that these .c/.h files

christian the servers i currently own are dell servers. The servers i plan to buy are Dell R530, 2U rack servers with 8 x 3.5 inch drives, with 64 gb ram each, Hardware raid. I am thinking of 2 X 300 gb ssds raid1 and 6 x 2 tb drives in raid10 for data. I do not have any experience in setting up drdb (that would be my next step) ... primarily using standalone servers with hardware level

Thanks for the info. I do have one further question for you. On your servers that are currently handling 50k IMAP sessions, how many users does that correspond to? Since many users will have multiple IMAP sessions on multiple devices, I?d like to hear about some real-world numbers that could be used for budgeting a new project like mine. Also, do you use Dovecot IMAP proxies in front of your

Is ?doveadm save? an undocumented feature? Or, just well-hidden? https://wiki2.dovecot.org/Tools/Doveadm <https://wiki2.dovecot.org/Tools/Doveadm> Kevin

(I subscribed to a daily digest for this list and can?t figure out how to reply to a reply.) Anyway, Aki Tuomi replied to my feature request saying: > We support in latest 2.2 release > > MD5 MD5-CRYPT SHA SHA1 SHA256 SHA512 SMD5 SSHA SSHA256 SSHA512 PLAIN > CLEAR CLEARTEXT PLAIN-TRUNC CRAM-MD5 SCRAM-SHA-1 HMAC-MD5 DIGEST-MD5 > PLAIN-MD4 PLAIN-MD5 LDAP-MD5 LANMAN NTLM OTP SKEY

> On May 10, 2017, at 11:06 AM, Sami Ketola <sami.ketola at dovecot.fi> wrote: > > >> On 10 May 2017, at 14.57, KT Walrus <kevin at my.walr.us> wrote: >> >> I could use an example of how to use curl to save a new message to a user?s INBOX using the Doveadm HTTP API. >> > > Here you go: > > doveadm mailbox save > > parameters:

I need to archive (i.e., send to another mail server) all messages saved on my mail servers. I?ve implemented for SMTP submission, but haven?t figured out how to archive messages saved by IMAP (like to Drafts, Sent, etc.). How would I best implement this? Can I enable Sieve plugin for IMAP? Or, some other method? Like one way backup to archive server? I really only need to archive the messages

> On Aug 18, 2017, at 4:05 AM, Stephan von Krawczynski <skraw at ithnet.com> wrote: > > On Fri, 18 Aug 2017 00:24:39 -0700 (PDT) > Joseph Tam <jtam.home at gmail.com> wrote: > >> Michael Felt <michael at felt.demon.nl> writes: >> >>>> I use acme.sh for all of my LetsEncrypt certs (web & mail), it is >>>> written in pure

I?m adding once a day mail delivery to my site. Messages are marked by the sender as ?overnight? or ?once a week? delivery. The way I?m planning on implementing this is to queue messages until midnight in a MySQL database. Each mailbox will be kept in two Dovecot mailstores. The first mailstore will give the users IMAP access to their mailbox. A second mailstore will hold the next day?s new

I could use an example of how to use curl to save a new message to a user?s INBOX using the Doveadm HTTP API. https://wiki2.dovecot.org/Design/DoveadmProtocol/HTTP <https://wiki2.dovecot.org/Design/DoveadmProtocol/HTTP> Do I really use the -d option and inline the entire new message in the command-line? Or, should I create a temporary .json file with the message wrapped in JSON and pass

I?m trying to understand how the nginx mail proxy and dovecot work. As a I understand it, nginx can listen on a IP:port for IMAP connections. NGINX then can invoke a PHP script to do authorization and backend server selection. Does NGINX than proxy to the backend dovecot IMAP server all subsequent IMAP commands that the user?s mail client requests? Does the backend dovecot IMAP server do its

> On May 10, 2017, at 5:16 PM, Sami Ketola <sami.ketola at dovecot.fi> wrote: > > >> On 10 May 2017, at 16.26, KT Walrus <kevin at my.walr.us> wrote: >>> >>> # curl -v -X POST -u doveadm:hellodoveadm -H "Content-Type: application/json" -d

I?m in the process of setting up a Dovecot IMAP proxy to handle a number of IMAP server domains. At the current time, I have my users divided into 70 different groups of users (call them G1 to G70). I want each group to configure their email client to access their mailboxes at a domain name based on the group they belong to (e.g., g1.example.com <http://g1.example.com/>, g2.example.com