• Sophos Firewall and Office365 via MTA - was Hybrid, now Online only

    Markus Quirmbach
    Markus Quirmbach
    Hello all, we are using our Sophos XGS-Firewall as a SMTP proxy with MTA. We have an Exchange Hybrid environment. The mail flow right now is as following: OUTBOUND: Exchange Online -> The internet INBOUND: The Internet -> XGS -> Exchange OnPrem…
    • 3 months ago
    • Sophos Firewall
    • Discussions
  • Use SFOS as Mailrelay

    Snadro
    Snadro
    Hello Everyone Short description about our current Setup. We have Sophos UTM using as Mail relay solution for all of our internal Applications and Printers. The UTM is connected to M365 which is our Mail server. the UTM is not a Gateway for our normal…
    • 3 months ago
    • Sophos Firewall
    • Discussions
  • Send emails to Exchange Online via Sophos XG

    nils50122
    nils50122
    Hello, we have the following problem: Three of our server / applications do not support OAuth for the moment, so we need an locally smtp server inside our network. For the moment we use simple postfix, authenticated users only from specific internal…
    • 5 months ago
    • Sophos Firewall
    • Discussions
  • SMTP/S logging and reporting issues

    rfcat_vk
    rfcat_vk
    Hi folks, I have an old thread with questions about IMAP/s and SMTP/s where the IMAP/s issue is being investigated and the SMTP issues appears to be ignored. A fresh thread devoted to SMTP/s issues. Questions. 1/. why are SMTP/s messages not displayed…
    • 6 months ago
    • Sophos Firewall
    • Discussions
  • Sophos XG Bug: Cannot send Backups using Amazon SES

    Rhys Goodwin
    Rhys Goodwin
    Hi Folks, Sophos XG appears to have a bug where it doesn't interact with some SMTP servers properly. In this case Amazon SES (Simple Email Services) cannot be used with Sophos XG for sending Backups. Other notifications work fine but backups generate…
    • Answered
    • 8 months ago
    • Sophos Firewall
    • Discussions
  • How to "drop" mails instead of "reject"

    Markus Quirmbach
    Markus Quirmbach
    Hi all! I hope this is just a small question and easy to answer. We have a XGS 2300 with SFOS v20 deployed and we use it as our snmp proxy. We get a lot of mails from "spameri @ tiscali.it" which are rightfully rejected. Now, I would like to set up…
    • 9 months ago
    • Sophos Firewall
    • Discussions
  • Inbound SMTP Routing

    RichardHughes1
    RichardHughes1
    Hi, I have been trying to implement SMTP routing for inbound and outbound SMTP traffic over a GRE tunnel. I have another thread about this but I am having some trouble with the source of inbound SMTP traffic, becoming the destination? (screenshot below…
    • 9 months ago
    • Sophos Firewall
    • Discussions
  • Sophos Firewall Route traffic through GRE Tunnel

    RichardHughes1
    RichardHughes1
    Hello, I am really struggling with this and would greatly appreciate any help that could be given. I have set up an X4B.net GRE tunnel using this guide: https://support.sophos.com/support/s/article/KB-000035813?language=en_US#GRE_route . This seems to…
    • 10 months ago
    • Sophos Firewall
    • Discussions
  • How to enforce TLS negotiation for any SMTP traffic?

    Fred12
    Fred12
    Hello, as from here I can configure "Require sender email domains" to enforce TLS negotiation ( whitelisting ). Beside this I can configure "Skip TLS negotiation" ( blacklisting ). For compliance and legal reason I need to configure TLS negotiation…
    • Answered
    • 10 months ago
    • Sophos Firewall
    • Discussions
  • Please advise how to block spam messages while using imaps and how to get smtp into the logviewer?

    rfcat_vk
    rfcat_vk
    Hi folks, a while ago I had issues with SASI not logging all iMaps traffic. The issue has been partially resolved by changing firewall mail rules. A new issue is I receive over 1000 spam messages a day from the same sites via the mail post office…
    • 10 months ago
    • Sophos Firewall
    • Discussions
  • SMTP notification settings

    Pawel T
    Pawel T
    Hello everyone! I'm trying to configure and use an Office 365 mail server (smtp.office365.com) for email notifications on all of our clients' Sophos Firewalls. However, I'm experiencing issues with this setup. I'm not receiving any test emails or backups…
    • 10 months ago
    • Sophos Firewall
    • Discussions
  • Sophos Firewall blocking outgoing IPv6 SMTP traffic

    Nicolas Michaux
    Nicolas Michaux
    Hello, I'm trying to configure SMTP on Sophos Firewall ( SFOS 20.0.0 GA-Build222) : everything is running smoothly in IPv4, but Firewall is blocking outgoing IPv6 SMTP traffic : I tried to define all kinds of (IPv6) rules to allow this traffic…
    • Answered
    • 11 months ago
    • Sophos Firewall
    • Discussions
  • Allow external public IP Address to access to SMTP relay

    eclipse79
    eclipse79
    Hello, I come from Sophos UTM, now I am configuring an XGS series. I need to allow an external public IP address to access to SMTP replay. I tried to add the IP to Replay Settings - Allow relay from hosts/networks but it does not work. It seems that…
    • 11 months ago
    • Sophos Firewall
    • Discussions
  • SFOS and SG UTM affected by SMTP/EXIM CVE-2023-51766?

    FFin
    FFin
    Hi, are SOFS and SG UTM affected by CVE-2023-51766 (Sender Spoofing by SMTP)?
    • Answered
    • 12 months ago
    • Sophos Firewall
    • Discussions
  • Block port 25 or SMTP port for non replay LAN IPs

    Ahmed Naveed
    Ahmed Naveed
    we configured Sophos XG in MTA mode. We need to restrict access to Port 25 for SMTP traffic to specific terminals only. Currently Port 25 is accessible from all LAN networks
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • SMTP DoS settings (methodology)

    scrvlz
    scrvlz
    Have already been referred here: https://doc.sophos.com/nsg/sophos-firewall/19.5/help/en-us/webhelp/onlinehelp/AdministratorHelp/Email/GeneralSettings/index.html#smtp-settings I wonder if any of you guys can share with me what and why your settings…
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • Outgoing SMTP Traffic

    admin_idl
    admin_idl
    Hello, We use 2 WAN interfaces but want to route the outgoing SMTP traffic via one interface. What would be the best approach here?
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • Do I need to use auto added Firewall rule for SMTP scanning?

    jek
    jek
    Hi, I am prepairing configuration to use XGS as MTA and I have some questions which I don't find answers to. Current situation: External MX and MAIL-out server are used, Exchange is set up locally. We have /24 public IPs on that site and only…
    • Answered
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • Cant send emails using smtp2go in XG 210 but works on XGS 136?

    Martin Murray
    Martin Murray
    Hi everyone, I'm setting up email notifications on an XG 210 that I copied from an XGS 136. The 136 works fine, but the 210 simply won't work? See attached video.
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • SMTPD service DEAD

    mulah
    mulah
    Started showing SMTPD service dead and i tried to go and restart service and found out that it can only be restarted in command console. After restarting the service in the command console the service will still show SMTPD service dead. All mail is…
    • Answered
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • smtp quarantine items cannot be deleted from web console

    brucepott
    brucepott
    Hi, and thanks in advance for any help. we have some items in the smtp quarantine that cannot be deleted from the console. Can we ssh into the firewall and delete form the file level? I have found a directory /var/quarantine but not not sure if I…
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • SMTP SSL/TLS on Port 465/587 Local_ACL Violation?

    Quallensaft
    Quallensaft
    Is the firewall (MTA mode) not accepting SMTP with SSL/TLS also on port 465/587? My Epson printer is not able to connect on 465/587 with the firewall: /log/smtpd_main.log -> nothing in log /log/smtpd_reject.log -> nothing in log ACL violation? Source…
    • Answered
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • Attack brute force SMTP

    Bruno H Silva
    Bruno H Silva
    Dear friends! We have identified some brute force attack attempts on our email server. We carry out some ips blocks and also for some countries however some attacks come from countries that we have a relationship with so they cannot be blocked by the…
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • STARTTLS - Scan inbound SMTP traffic

    triune
    triune
    If you have a port forwarding rule (DNAT) to forward incoming SMTP (25) and SMTPS (587) traffic to mail servers based on the ports, and enabled SMTP scan on the Firewall-rule. The STARTTLS will not work on port 587 for the SMTPS connection and will result…
    • over 1 year ago
    • Sophos Firewall
    • Discussions
  • Change Target port SMTP MTA to internal Exchange

    Sven OlafSchuran
    Sven OlafSchuran
    Hello, I need to change target port to internl exchange server to port 5252. MTA mode uses port 25 as normal. Cause of reicipent filter with callout needed, this is not working on smtp port 25, cause of exchange implementation. This have to setup…
    • over 1 year ago
    • Sophos Firewall
    • Discussions
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