mail gateway

  1. R

    SMTP not working on internal network but outside its working on proxmox

    I have set up SMTP on Proxmox using Mailcow, and everything is working fine.Only one issue: I am not able to use that SMTP on the Proxmox server. itself internally. For example, if I create another machine on the proxmox server and set up a Node project that uses SMTP, my Mailcow SMTP will not...
  2. E

    Considering Self-Hosting Email with Proxmox Mail Gateway: Advice Needed

    I've been contemplating a move back to self-hosting my email services, and I'm considering a setup where I host the mailbox and mail services at home, complemented by a Proxmox mail gateway in the cloud. The idea is to configure the at-home mail server to relay both incoming and outgoing emails...
  3. K

    mailer-daemon mails are in queue

    First of all hello everybody. As I was checking queue inside of my proxmox mail gateway, I have seen that I have like 30 mails which are just hanging there. All mails are from to Reason is "connect to []:25...
  4. J

    Deferred Mail - Move Server - Cluster

    Hi, We have a proxmox server cluster that has been running with no problems for a few years. This morning someone sent an email to a large contact group. They realised they made some errors and sent a second one with a few corrections. This has meant Office365 has put one of the servers in the...
  5. D

    PMG default language

    hi, i want to set the default language to german, but i have no clue how to do so. (browser cookie is not a solution, we need a better - hardcoded- way to do so ;-) ) since /etc/pve/datacenter.cfg is not used for PMG, anyone has a direction where to find the needed setting? thanks
  6. O

    Mail Filter Disables Quarantine

    I setup a new Mail Filter Rule to quarantine, however, when I enable the rule, it seems like the quarantine breaks. Everything starts coming through. Not sure how to proceed in diagnosing the issue. The current Spam Level 3 works fine, just not when I flip over to my Spam Level 4.
  7. M

    Connection refused when trying to send outbound mail

    This is my first installation of the Proxmox Mail Gateway (PMG) and I am stuck at the very basic setup issue, even though I think I followed the instruction and the tutorial on how to configure PMG. I configured my internal Synology MailPlus server to relay to PMG on port 26 and it seems to be...
  8. S


    I have been testing PMG for a while now and I have to say I'm impressed. I like how simple it is to use. There is one thing that it's missing though. You can have finer grained control (than domain level) by putting in transport_maps by using virtual_alias_maps. # transport...
  9. S

    [SOLVED] Extend statistics for sender

    I'm using Mail Gateway 7.3.-3. In Statistics->Sender I have data for the last 7 days and before that I get "No data in database". How can I extend that period, let's say for a month? Thank you.
  10. T

    454 4.7.0 TLS not available due to local problem

    Transcript of session follows. Out: 220 In: EHLO Out: Out: 250-PIPELINING Out: 250-SIZE 10485760 Out: 250-VRFY Out: 250-ETRN Out: 250-STARTTLS Out: 250-ENHANCEDSTATUSCODES Out: 250-8BITMIME Out: 250-SMTPUTF8...
  11. C

    Zentyal Mail Server + Proxmox Mail Gateway, worth it or redundant?

    Hello, I love Proxmox VE and now I'm deploying Zentyal as a mail server, so I wonder if it is worth it to add Proxmox Mail Gateway to my infrastructure. Since Zentyal already includes Sieve, Amavis, ClamAV and SpamAssasin, will I get any benefit with Proxmox Mail Gateway or would that be...
  12. G

    Proxmox Mail Gateway. SMTP Server.

    Hi, I wanted to ask, I have a website that requires an SMTP server to send emails, what does Proxmox Email Gateway do exactly? Does it connect to an SMTP server or create it? I'm a bit confused
  13. V

    how I can clean the CACHE???

    Good afternoon! Please tell me how I can clean the CACHE on one of the gateways of the Proxmox Mail gateway v 7. Very urgently needed!!!
  14. P

    What happens to a 2-node cluster when the master node dies?

    I am looking at 2-node and 3-node ha/cluster configuration, testing out different dr scenarios. When I purposely disconnect the master node, seems the cluster wont survive. Any tips how to overcome this?
  15. S

    Block emails To: Undisclosed Recipients

    The past week I have been seeing spam getting thru by using: To: Undisclosed Recipients Is there a way to block this? Thanks in advance!
  16. W

    Sending mail problem

    Hello, I am dealing with the network side of a hosting company and there are 3 /24 ip classes, 2 of these 3 classes are completely blocked in outlook style places (Normal Blacklist is available but not on spam). I install the Proxmox Mail Gateway structure on a single ip address and extract all...
  17. P

    ZImbra sends a lot of obscure letters

    It sends letters at a certain time, by periods. But I don't understand what he is trying to do and how to stop it? Logs're below: Jun 3 15:41:06 proxmox postfix/qmgr[865]: EC713C2642: from=<>, size=2337, nrcpt=1 (queue active) Jun 3 15:41:37 proxmox...
  18. O

    Mail Proxy Use SPF

    I have an issue when Mail Gateway is set to Use SPF, that it doesn't seem to work correctly to allow the following domain with a more specialized SPF record where they are using this for example: exists:%{i} Do you have any workaround, other than whitelisting their...
  19. F

    Proxmox Mail Gateway regex from and to

    Hi, I would like to block all email arriving to and where sender is not or I've tried to do like the following under who-object but looks like doesn't work...
  20. M

    Relaying specific domain locally other externally

    Hello, I have proxmox mail gateway as an internal smtp server, i want to relayed within the same internal server itself and all other domain to be relayed to another smtp server. I cannot fully wrap my mind how to specifically tell proxmox to do it. I configured default relay to...


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!