Hello,
I'm getting the following from my external mail server:
2024:02:22-19:28:14 wahine exim-out[** do-not-reply@fw-notify.net P=<> R=smarthost_route T=smarthost_smtp H=smtp.protonmail.ch SMTP error from remote mail server after end of data: 550…
Hi,
Keen to know if there are any mitigations available, or at least a date for a security update to address the recent SMTP smuggling security risk.
I have confirmed that UMT 9.718-5 will process smuggled SMTP emails, and are treated as valid even…
We forward our emails via Sophos to Socket Labs Smart Host service. The service itself works well, however, all emails we send are being sent twice. The mails server we send form is an Exchange 2019 server, if we send directly from that server to Socket…
Hallo,
ich habe eine SG, auf der ich die Mail-Protection für einen dahinterliegenden Exchange-Server aktiviert habe.
In den Notifications habe ich "[WARN-070] Too many failed logins" aktiviert.
Nun bekomme ich ca. 100 Notifications oder mehr am…
Hi everyone,
a customer told us today to add some custom RBLs at his UTM, because he is getting a lot of spam and the "recommended RBLs" are not enough for him.
So I added four RLBs today:
zen.spamhaus.org
psbl.surriel.com
sbl-xbl.spamhaus…
Hello,
we use our Sophos UTM as a SMTP Relay in front of our Exchange Servers.
We have several Web applications that are hosted elsewhere an that use our Sophos as SMTP Relay - all of them figure in the list of "Allowed Hosts/Networks" under Host…
Hi Community,
I want to bring up this topic as I did not find helpful informations. I did read about the change to SASI spam filter but there was no real feedback about user reporting less anti spam performance. Overall myself and the other users did…
When I look at my SMTP live log I see continual attempts to access my mail server. The SMTP proxy seems to be doing its job, but I am interesting in knowing the best method for minimizing the amount of entries that get recorded in the logfile.
2022…
I am using UTM 9.708-6 with Exchange Server 2019.
Everything was running fine, until 2 days ago. I made a change into the Exchange receive connector Relay configuration. Due to an additional server, I had to extend this value. Before it was 10.0.0.1…
Hi,
i have many spams on my utm and it goes through the utm. I don't know if the rbl check is working proparly. is there a possiblity to check this? And i know the question is often written, but what are the best RBLs for dyn-dns-email-server? Yeah…
Hey everyone,
is anyone using DKIM on the Sophos UTM - and has anybody else problems with it after the update to 9.706-9? We had reports that after the update multiple customers were blocking us due to spam detection. We then checked the headersin mxtoolbox…
Hi Everyone!
we use UTM as our SMTP proxy. One of my colleagues does not receive mails because they get instantly rejected because of BATV. But those mails aren't SPAM or something, they're legitimate. My feeling is that those get the BATV flag because…
Greetings,
Yesterday morning I upgraded to firmware version 9.705-7. This morning at about 6:00 am the RBL feature has started rejecting well-known hosts. Shown here are oktax.state.ok and pharmacy.cvs.com.
Checking pharmacy.cvs.com with www.anti…
Hello,
I monitor the SMTP proxy spool folders with a simple script which counts the mails on the filesystem.
This works good but from time to time the spool folder has mails in it which get not counted by the Mail Manager only on filesystem basis…
Hi,
momentan läuft der intern smtpd auf der UTM auf allen interfaces. Das möchte ich gerne beschränken auf LAN und eben VPN, sprich Site2-Site VPN. Bei der Konfiguration der SMTP Interfaces kann ich aber das Site2-Site nicht sehen. Ist ja auch logisch…
Hi,
we have a couple devices (like notifications from our Anti-Virus Server or Printers) that need to send Mails to Office 365. I already created a Firewall Rule that allows traffic on the ports 25,465 and 587. I also tried rules like "HOST" -> ANY…
Where does the UTM document whether it successfully validated SPF records? and with which IP and or Domain it was validated?
I have to investigate a phishing campaign and i have access to the email itself as well as the smtp log file.
In neither of…
Hello,
we are sending out our emails from our internal mailserver. For some email domains we can everytime a local mail error:
------------ Sophos XG Firewall was unable to send the following mail:
From: d.xxxx@bixxxxxx.de
MessageID: <f04d4d62-48ca…
Hallo zusammen,
nach Stundenlanger Fehlersuche muss ich dann jetzt doch mal das Forum bemühen da ich unsicher bin, ob die Sophos mir nicht doch trotz Deaktivierung dazwischenfunkt.
Habe hier eine FritzBox, eine Sophos UTM VM, einen Exchange und…
I have to come back to this older thread of mine https://community.sophos.com/utm-firewall/f/mail-protection-smtp-pop3-antispam-and-antivirus/120948/outbound-mails-fail-with-greylisting---no-second-attempt because the problem is biting me again (or rather…
I've been struggling with this now for several weeks. I'm having issues sending emails with attachments through our SMTP proxy on our UTM.
Over time the emails will send, but it can take anywhere from 30 mins to 72 hours to send emails with attachments…
Hi
We currently have 2x UTM 9 on different sites and have an issue with our outbound mail flow in a DR scenario. The mail flows fine though our primary site but we cannot get it to route through to the secondary site, so I guess this is a routing issue…
Hallo, ich habe ein paar Fragen zum Emailversand über die sophos utm.
Der Aufbau:
interner mailserver (iredmail)
sophos utm 9
Die Mails werden aktuell direkt vom Mailserver an den Empfänger Server geschickt.
der MX liegt bei mir u.a. Bei strato…
Hi there,
today incoming messages from 2 customer domains have been rejected to "550 Administrative prohibition". #hostname #5.2.0 SMTP; 550 Administrative prohibition> #SMTP#. A couple of minutes later new messages are delivered successfully again…