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gmail (IMAP native apps)
Fortigate 200b
In short... we have ports 993, 465, 587 open to support gmail' s IMAP settings. We have checked UTM settings and do not see anything that should be causing any issues.
-On Android devices using the native app we receive a " network error" error message.
-On iPad devices we receive a " timeout" error message.
-On Kindle Fire devices we receive a " network error" message.
-Laptops running exchange or mac mail work fine.
-Gmail web interface works.
These devices work fine when off of our network. I have read about possible certificate issues which could be a cause as well. I am looking for any input to get these devices working with gmail IMAP settings. Your input would be greatly appreciated.
Thank you in advance!
3 REPLIES 3
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I am having similar issues with mobile devices using FSAE_Guest_User and UTM. I am not sure why they are getting blocked and it seems random. If I turn off all UTM features, the device can get to imaps and pop3s sites. Users that are not guests and have AD auth accounts don' t have this problem. This could also be that all non-windows devices are using the guest accounts and all windows devices are using AD.
-JWP
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I have read about possible certificate issues which could be a cause as wellYou probably have " Protocol-Options" enabled on that firewall policy: Possible solutions: 1. Install the FortiGate SSL Proxy certificate on the devices. 2. Changed ports for IMAPS in the protocol-options profile. 3. Remove the protocol-options from the firewall policy.
FCNSA, FCNSP
---
FortiGate 200A/B, 224B, 110C, 100A/D, 80C/CM/Voice, 60B/C/CX/D, 50B, 40C, 30B
FortiAnalyzer 100B, 100C
FortiMail 100,100C
FortiManager VM
FortiAuthenticator VM
FortiToken
FortiAP 220B/221B, 11C
FCNSA, FCNSP---FortiGate 200A/B, 224B, 110C, 100A/D, 80C/CM/Voice,
60B/C/CX/D, 50B, 40C, 30BFortiAnalyzer 100B, 100CFortiMail
100,100CFortiManager VMFortiAuthenticator VMFortiTokenFortiAP 220B/221B,
11C
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what if we configure firewall in proxy mode