Need Guidance on SPF Flattening for Zoho Mail Configuration
Hi everyone,
I'm hoping to get some advice on optimizing my SPF record for a Zoho Mail setup. I use Zoho Mail along with several other Zoho services, and as a result, my current SPF record has grown to include multiple include mechanisms. My Cloudflare record looks like this:
v=spf1 include:zcsend.net include:transmail.net include:zoho.com include:zohomail.com include:one.zoho.com ~all
When I run this SPF record through various online validation tools, I'm consistently flagged for a couple of critical issues:
- Excessive DNS Lookups: The record results in 11 DNS lookups, which is over the permitted limit of 10. I understand this can cause some receiving mail servers to fail the SPF check outright, potentially leading to delivery problems.
- Duplicate IP Mechanisms: The validator reports several warnings about duplicate IP addresses, with errors like:
"Duplicate ip4 mechanism. The value 'ip4:136.143.188.0/24' is invalid."It seems the IP ranges from the different Zohoincludestatements overlap.
The recommendation from these tools is to perform SPF Flattening. I understand the basic concept—to consolidate all the IP addresses from the various include statements into a single, flat list of ip4 and ip6 ranges to reduce the lookup count and clean up the duplicates.
However, I want to make sure I implement this correctly for Zoho's ecosystem. My main questions are:
- What is the most reliable way to gather all of the current IP ranges that Zoho uses for email sending, considering all these different services (
zcsend.net,transmail.net, etc.)? - Is there a recommended tool or process for generating an accurate flattened record that won't break my email delivery?
- Once flattened, I'm concerned about maintenance. If Zoho adds new IP addresses in the future, my flattened record will become outdated. What is the best practice for handling these updates? Should I manually re-check and update the record periodically, or are there better solutions?
I would greatly appreciate any detailed steps, personal experiences, or best practices you can share. Thank you in advance for your help
Access your files securely from anywhere
Centralize Knowledge. Transform Learning.
All-in-one knowledge management and training platform for your employees and customers.
New to Zoho Recruit?
Zoho Developer Community
New to Zoho LandingPage?
Zoho LandingPage Resources
New to Zoho Survey?
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho CRM Plus?
Deliver unforgettable customer experiences
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Zoho Marketing Plus?
Everything you need to run your marketing
New to Bigin?
Topic Participants
Nolto Turkiye
Sagar S
Sticky Posts
Managing user mailbox actions
An organization often has users with different roles and responsibilities, such as leadership, operations, or support teams. While some users may require full access to email features, others may only need limited functionality. For example, enablingBalancing access, security, and productivity with Email Policy
An organization typically includes multiple user groups, such as leadership, sales, and support, each with different email usage patterns and security needs. Administrators must balance flexibility and control, thereby ensuring email usage aligns withMailbox delegation - A secure way to enable collaboration
Admins often encounter scenarios where a user needs another team member to access and manage their mailbox during extended leave, role transitions, or while handling high email volumes. In such situations, ensuring business continuity without sharingEmail Forwarding: Maintain business continuity
As an administrator, ensuring uninterrupted email communication is critical when a role-based employee is unavailable due to extended leave or a temporary role change. Emails from customers, partners, and internal teams must continue to be received andMaintain steady traffic to your domain: How Domain Aliasing helps
Consider this scenario: An organization has its primary domain as administrator.com. Now it wants to shorten its domain to admin.com because it's simpler and easier to remember. However, changing the domain completely can cause the following problems:
New to Zoho TeamInbox?
Zoho TeamInbox Resources
Zoho CRM Plus Resources
Zoho Books Resources
Zoho Subscriptions Resources
Zoho Projects Resources
Zoho Sprints Resources
Qntrl Resources
Zoho Creator Resources
Zoho CRM Resources
Design. Discuss. Deliver.
Zoho Show Resources
Get Started. Write Away!
Writer is a powerful online word processor, designed for collaborative work.
Zoho CRM コンテンツ
-
オンラインヘルプ
-
Webセミナー
-
機能活用動画
-
よくある質問
-
Ebook
-
-
Zoho Campaigns
- Zoho サービスのWebセミナー
その他のサービス コンテンツ
Nederlandse Hulpbronnen
ご検討中の方
Recent Topics
Trying to access records in a custom module in Zoho Desk and not having luck
I've built a custom module in Zoho Desk and am using a custom function to query the records in the module and I'm not having any luck. The only way I have found to retreive a record is by getting it by its recordID (the long zoho assigned one). The functionComposite items inside of composite items; bill of materials needed
Hi Zoho and Everyone, I am evaluating whether Zoho Inventory will work for my small business. I grow and harvest herbs and spices but also get from wholesalers. I use all these items to make herbal teas, but also sell them as individual items on my Shopify store and Etsy. I discovered the composite item bundling and am wondering if I could get some assistance since there is no bill of materials: Our herbal company's best selling tea is a sleepytime tea. Sleepytime Tea can be purchased in three weightsZOHO Books Smart Accounting Software for Travel Agency
Dear Travel partner, Contact for Travel Agency Accounting Setup & Training Vansh Travel (ZOHO Books Authorised partner) Email: info@vanshtravel.com Mo: +91 98984 95155 Please find PDF452 Mailbox delivery restricted by policy error
We have been testing Zoho desk for about a week now and have been forwarding emails in via an Exchange Online Mail flow rule without issue until yesterday. Suddenly yesterday morning we started getting the vast majority of the emails stuck in PendingSend Email reply on behalf of Agent
Hi, When using the send email reply via the API I can set the reply on behalf of the customer by using impersonatedUserId in the header of the API call. Is there a way to do this for Agents too? I need to be able to send an email reply on behalf of anSharing Tickets to a team within a department
Hi there, We have a need for one department to be able to share tickets to a specific team within a department, I'm wondering if this is possible? All the shared tickets are going into the 'Shared Tickets' view for the whole department but is there aRemoving To or CC Addresses from Desk Ticket
I was hoping i could find a way to remove unnecessary email addresses from tickets submitted via email. For example, a customer may email the support address AND others who are in the helpdesk notification group, in either the TO or CC address. This resultsDo not use isnull()
Does not always return booleans. Can also return null. Never use this function. Just use var==null instead.Organization wide Account and Contacts Visibility/Sharing Capabilities?
Has anyone figured out a way to make visibility or sharing of Accounts and Contacts to be available across the entire organization without having to have every individual user edit their Sharing permissions? For our sales folks they need to be able toIs there a way to configure dark mode for Campaigns emails that go out to customers?
I've found a lot of information on how to configure dark mode for my (The user) personal Zoho workspace and email, but is there any way to edit dark mode settings on emails that we send out to customers via campaigns? We sent out a test email the otherWhen Does WorkDrive integrate with Books?
When Does WorkDrive integrate with Books?How do I import Connected Records for a Deal?
Can you point me to an example of the CSV file that would add related records to an existing CRM Deal? I imported a Deal, then tried importing a connected record using a unique ID that references the Deal ID, but it doesn't attach it to the Deal recFSM integration with Books
Hi, I have spent a few months working with FSM and have come across a critical gap in the functionality, which I find almost shocking....either that, or I am an idiot. The lack of bi-directional sync between Books and FSM on Sales Orders/ Work OrdersHow to close an estimate ?
Hello, I have created estimates, and converted them to invoices to get 50% payment. Now I have 2 cases where the estimate stills shows status partially invoiced, however: 1. for one of them, project stopped half way, so the remaining part will never bePower up your Kiosk Studio with Real-Time Data Capture, Client Scripts & More!
Hello Everyone, We’re thrilled to announce a powerful set of enhancements to Kiosk Studio in Zoho CRM. These new updates give you more flexibility, faster record handling, and real-time data capture, making your Kiosk flows smarter and more efficientHow do you print out the invoices comments
I have some invoices where i need to print out the comments that show when reminders and etc were sent how do we print those out in Zoho Books.Unable to load a specific image
Hi I am trying to upload an svg file, which reports that there is "a problem with the file", but does not say what sort of problem. I can't find anything which says which files are supported, so it may be it does not support svg. (which would be a real shame) The file itself will open in either Firefox or Chrome without problem. For the moment I am using a png file, which does not zoom well of course. DavidWhy does the Address field show the wrong map location even with a correct Pincode?
I am noticing an issue with the Address field map in Zoho Creator. When I enter a city name that exists in multiple locations within the same state, the map sometimes points to the wrong area even if I have entered the correct Pincode. Currently, it seemsUploaded files are not included when using "Include user submitted data" in Email Notification
In Send Email notification workflow in Zoho Creator, there is an option called "Include user submitted data" which allows the email to contain all the form submission details. However, when this option is enabled, files or images uploaded through FileBooks <-> CRM synchronisation with custom Fields
Hello, We are synchronising Books Customers with CRM Accounts. In CRM Accounts I set up last year a "segments" multiselect field shown below In Books, I set up a custom multi-select field with the same value as in the CRM And set up the synchronisation inside Books. Want to synchronise the Books Segments with the CRM Segments, but the later doesn't exist, and another non-existing is there ?! First, I don't understand where the field Segmentation is coming from. Second, I set CRM Segmentation to syncCRM x WorkDrive: We're rolling out the WorkDrive-powered file storage experience for existing users
Release plan: Gradual rollout to customers without file storage add-ons, in this order: 1. Standalone CRM 2. CRM Plus and Zoho One DCs: All | Editions: All Available now for: - Standalone CRM accounts in Free and Standard editions without file storageArchive Option in Conversation View
Hello, I have a suggestion\request to add an "Archive Thread" button in conversation view of Zoho Mail. The best suggestion I have is to put an "Archive Thread" button next to the "Label Entire Thread" button in conversation view. Most users don't justOutlook/Hotmail Blocking Zoho SMTP IPs (S3150)
We are currently facing a serious deliverability issue with Zoho SMTP while sending transactional OTP emails for our production application. Emails sent to Outlook / Hotmail addresses are being rejected with the following error: 550 - 5.7.1 Unfortunately,Outlook is blocking incoming mail
Outlook is blocking all emails sent from the Zoho server. ERROR CODE :550 - 5.7.1 Unfortunately, messages from [136.143.169.51] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). It looksTrack Marketing Automation Campaigns in Zoho CRM
Hello, I've been searching but haven't found the exact answer to this question. I am looking to track Marketing Automation email campaigns and activities inside of Zoho CRM. Use Case: Action: Prospect Submits A Lead Form Outcomes: Prospect created inZoho Social API for generating draft posts from a third-party app ?
Hello everyone, I hope you are all well. I have a question regarding Zoho Social. I am developing an application that generates social media posts, and I would like to be able to incorporate a feature that allows saving these posts as drafts in Zoho Social.Temporarily rate limited due to IP reputation.
We have suddenly started receiving the following Mail Delivery Status Notification: Diagnostic-Code: 4.7.650 The mail server [136.143.184.12] has been temporarily rate limited due to IP reputation. For e-mail delivery information, see https://aka.ms/postmasterIncorrect Functioning of Time Logs API (Version 3)
We need to fetch the list of time logs for each task for our company internal usage. We are trying to achieve it by using the next endpoint: https://projects.zoho.com/api-docs#bulk-time-logs#get-all-project-time-logs Firstly, in the documentation theIMPORTANT: It doesn´t search for letters with portuguese characters.
Some of my articles have for example the word "vídeo". But if I search for "vídeo" it doesn´t find them. If I search for "video" it does find them. Idealy, it should find the articles either way. But if I have to choose, it would be better to find theIMPORTANT: It doens´t show full article name on search - Should add line break
When we search for articles, it doesn´t show the full name. There should be a line break so the user can see the full article name, otherwise the user can´t know if that´s the article he/she is looking for. This is very important, otherwise the user hasZoho Books - Payment Gateway - Revolut
Hi Books Team, My feature request if to include the popular platform Revolut as a payment collection option on invoices in Zoho Books. Please upvote if you are also looking for this option.Zoho Books | Product updates | January 2026
Hello users, We’ve rolled out new features and enhancements in Zoho Books. From e-filing Form 1099 directly with the IRS to corporation tax support, explore the updates designed to enhance your bookkeeping experience. E-File Form 1099 Directly With theKaizen #233 - Generating AI-powered Follow-up Emails Using CRM Functions and Widgets
Hey everyone! Welcome back to another interesting post in the Kaizen series! Sales teams regularly capture interaction notes in CRM after speaking with prospects. However, drafting a follow-up email that reflects the conversation context can be repetitiveConnect Bank in Zoho Books
Can I connect UOB or Ariwallex in Zoho Books?Using MPN across multiple SKUs and inventory tracking
I have several different SKU's that share a common MPN and would like to track inventory by MPN. SKU1 has MPN1 assigned SKU2 has MPN1 assigned Here is an example If I start with 5 of MPN 1 in stock I want each SKU1 and SKU2 to show as 5 in stock, If IExtend Zoho Canvas Customization to Zoho Creator Forms and Reports
Currently, Zoho Canvas allows users to design and customize the UI of Zoho CRM modules with a much better visual experience. This helps organizations create cleaner layouts, improve usability, and design interfaces that match their workflows. However,Marketing Tip #1: Optimize item titles for SEO
Your item title is the first thing both Google and shoppers notice. Instead of a generic “Leather Bag,” go for something detailed like “Handcrafted Leather Laptop Bag – Durable & Stylish.” This helps your items rank better in search results and instantlyFeature Enhancement Request – Text Formatting Options in Item Description (Zoho Books/Quotes Module)
Dear Zoho Development Team, Greetings from Radiant360 Integrated Technical Services LLC. We would like to bring to your attention a functional limitation we've encountered within the Item Table / Quote Description section of Zoho Books (and Zoho CRM Quotes).ZOHO Books Query
Good day, Can someone please advise. I recently migrated from ZOHO Invoice to ZOHO Books. No that I want to use the inventory on Books I cant as all my items have transaction history. The person I spoke to at ZOHO said I need to create a new Company profileBest way to schedule bill payments to vendors
I've integrated Forte so that I can convert POs to bills and make payments to my vendors all through Books. Is there a way to schedule the bill payments as some of my vendors are net 30, net 60 and even net 90 days. If I can't get this to work, I'll haveNext Page