• Editing MAIL FROM Header

    SalishSwede
    SalishSwede
    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…
    • 10 months ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • SMTP Smuggling CVE-2023-51766

    Seth Bodine
    Seth Bodine
    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…
    • Answered
    • 11 months ago
    • UTM Firewall
    • General Discussion
  • Al emails sent to a smart host sent twice.

    MarkLFT
    MarkLFT
    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…
    • over 1 year ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • SG UTM - Country Blocking mit SMTP-Proxy funktioniert nicht.

    ipzipzap
    ipzipzap
    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…
    • over 1 year ago
    • UTM Firewall
    • General Discussion
  • RBL blocking all mails

    JohnnyInc
    JohnnyInc
    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…
    • Answered
    • over 1 year ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • UTM 210 9.7: SMPT-Relaying: Combine authenticated and hostbased relay

    Geoofa
    Geoofa
    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…
    • Answered
    • over 1 year ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • UTM SMTP Mail Protection - Anti Spam filter insufficient

    KlausHahn
    KlausHahn
    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…
    • over 1 year ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Sophos SMTP demon and the database is hanging

    Nick KEY
    Nick KEY
    Hi, how can I restart the SMPT Service with Webamin? Regards
    • Answered
    • over 2 years ago
    • UTM Firewall
    • General Discussion
  • Best method for dealing with SMTP attacks

    Owen
    Owen
    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…
    • over 2 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • UTM9 Email Protection SMTP Exim-out

    HGA
    HGA
    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…
    • Answered
    • over 2 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • RBLCheck maybe not working

    MrBac
    MrBac
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • DKIM Broken in 9.706-9?

    _Tobias_
    _Tobias_
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • BATV exception not working

    Markus Quirmbach
    Markus Quirmbach
    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…
    • Answered
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • RBL working too well

    mkleine
    mkleine
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Mails in filesystem spool folder - not showing in Mail Manager

    UTMaddict
    UTMaddict
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • SMTP soll auch über VPN erreichbar sein

    IT Services26
    IT Services26
    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…
    • over 3 years ago
    • UTM Firewall
    • German Forum
  • Sophos Blocking SMTP Outbound traffic

    Rene Böhres
    Rene Böhres
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Where is successful SPF check documented

    flomb
    flomb
    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…
    • Answered
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Problem on sending email to some domain - Error: 451 Temporary local problem, please try again

    Dirk Mühlhauser
    Dirk Mühlhauser
    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…
    • over 3 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Probleme mit Spamgateway hinter Sophos UTM

    DanielBölling
    DanielBölling
    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…
    • Answered
    • over 4 years ago
    • UTM Firewall
    • German Forum
  • Outbound mail fails immediately when remote end error code is the temporary error code "451 4.7.1 Please try again later"

    hagman_01
    hagman_01
    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…
    • over 4 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • SMTP Broken Pipe issues on UTM 9.705-3 when sending Emails with attachments

    Joe Reed
    Joe Reed
    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…
    • over 4 years ago
    • UTM Firewall
    • General Discussion
  • Setup Sophos UTM 9 as a smart host to relay to Mimecast

    Colchester Institute IT Services
    Colchester Institute IT Services
    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…
    • over 4 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • Emails von internem Mailserver über UTM an Mailserver vom Provider schicken.

    Florian Mühlbauer
    Florian Mühlbauer
    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…
    • over 4 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
  • "550 Administrative prohibition" issues due to confirmed spam

    eyos
    eyos
    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…
    • Answered
    • over 6 years ago
    • UTM Firewall
    • Mail Protection: SMTP, POP3, Antispam and Antivirus
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