Having this really weird issue with one of the accounts on my company’s mail server. So, signing into the email account using EAS on an android device emails wont sync beyond February 02, 2023, despite new emails coming in. Have tried the account on a couple different devices and different mail app clients (Nine mail, Samsung mail), and tried changing the settings to remove any email size restrictions, but same result, will only sync emails from February 02, 2023. which at this time is now 4 days behind. IMAP works perfectly fine. Not sure which container handles the ActiveSync service, but I couldn’t find anything in the mailcow debug view that references ActiveSync other than the SOGo logs:

02/06/2023, 10:32:50 AM	notice	[19689]: 99.238.96.2, 99.238.96.2 "POST /SOGo/Microsoft-Server-ActiveSync?jQAJBBBOaW5lNDNDQTFDNUVBMEQ2BAAAAAAHQW5kcm9pZAcBAA== HTTP/1.0" 200 0/85 0.006 - - 0 - 13
02/06/2023, 10:32:49 AM	notice	[19689]: 99.238.96.2, 99.238.96.2 "POST /SOGo/Microsoft-Server-ActiveSync?jQAJBBBOaW5lNDNDQTFDNUVBMEQ2BAAAAAAHQW5kcm9pZAcBAA== HTTP/1.0" 200 0/87 0.007 - - 0 - 13
02/06/2023, 10:32:49 AM	notice	[19689]: 99.238.96.2, 99.238.96.2 "POST /SOGo/Microsoft-Server-ActiveSync?jQAJBBBOaW5lNDNDQTFDNUVBMEQ2BAAAAAAHQW5kcm9pZAcBAA== HTTP/1.0" 200 0/95 0.012 - - 256K - 13
02/06/2023, 10:32:48 AM	notice	[19689]: 99.238.96.2, 99.238.96.2 "POST /SOGo/Microsoft-Server-ActiveSync?jQAJBBBOaW5lNDNDQTFDNUVBMEQ2BAAAAAAHQW5kcm9pZAcBAA== HTTP/1.0" 200 0/118 0.187 - - 5M - 12
02/06/2023, 10:19:52 AM	notice	[18392]: 99.238.96.2, 99.238.96.2 "POST /SOGo/Microsoft-Server-ActiveSync?jRIJBBBOaW5lMDNBREM4RUNGQjdFBAAAAAAHQW5kcm9pZAcBAA== HTTP/1.0" 200 13/306 225.569 - - 1M - 13
02/06/2023, 10:19:52 AM	notice	[18392]: [ERROR] <0x0x55edb6b27f30[WOHttpTransaction]> client disconnected during delivery of response for <WORequest[0x0x55edb7053b30]: method=POST uri=/SOGo/Microsoft-Server-ActiveSync?jRIJBBBOaW5lMDNBREM4RUNGQjdFBAAAAAAHQW5kcm9pZAcBAA== app=SOGo rqKey=Microsoft-Server-ActiveSync rqPath=(null)> (len=13): the socket was shutdown

As for our DNS records:

;; A Records
*.immigrationmatters.ca.	1	IN	A	190.92.153.121
immigrationmatters.ca.	1	IN	A	190.92.153.121
localhost.immigrationmatters.ca.	1	IN	A	127.0.0.1
mail.immigrationmatters.ca.	1	IN	A	190.92.153.121
server.immigrationmatters.ca.	1	IN	A	190.92.153.121

;; CNAME Records
autoconfig.immigrationmatters.ca.	1	IN	CNAME	mail.immigrationmatters.ca.
autodiscover.immigrationmatters.ca.	1	IN	CNAME	mail.immigrationmatters.ca.

;; MX Records
immigrationmatters.ca.	1	IN	MX	10 mail.immigrationmatters.ca.

;; SRV Records
_autodiscover._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 443 mail.immigrationmatters.ca.
_caldavs._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 443 mail.immigrationmatters.ca.
_carddavs._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 443 mail.immigrationmatters.ca.
_imaps._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 993 mail.immigrationmatters.ca.
_imap._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 143 mail.immigrationmatters.ca.
_pop3s._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 995 mail.immigrationmatters.ca.
_pop3._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 110 mail.immigrationmatters.ca.
_sieve._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 4190 mail.immigrationmatters.ca.
_smtps._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 465 mail.immigrationmatters.ca.
_submission._tcp.immigrationmatters.ca.	1	IN	SRV	0 1 587 mail.immigrationmatters.ca.

;; TLSA Records
_25._tcp.server.immigrationmatters.ca.	1	IN	TLSA	3 1 1 4225c25de159761fa7a4274b54b84dd5c56ff80c9597ade2de7504eabe4355cc

;; TXT Records
_caldavs._tcp.immigrationmatters.ca.	1	IN	TXT	"path=/SOGo/dav/"
_carddavs._tcp.immigrationmatters.ca.	1	IN	TXT	"path=/SOGo/dav/"
dkim._domainkey.immigrationmatters.ca.	1	IN	TXT	"v=DKIM1;k=rsa;t=s;s=email;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAurVEGUCqoD07FTwgT+N1OF39aO9K0ZeMjpF/jHHMT1oOMgVXykQaqkFi0vJaUe9FHFS/wudMyCcP7OT5HFd0VQovlvOb5uJBl/3QmwotUd7IBsupcn3lWEqo693sEikZr5ta4WTWpZyJkxLodjLoAt5URY9Xe+Dv36TpOiRJ5o6j2RzEs4CLphj/qJAsOWLYFqM1yO/HUdOJqnMeQzscbPqh878atrH9hPhEqoreAcaTegeyPGFJqgplD+KmqJoMnY5g83Bngfk9l5NBan81RiOPNkM9uxky8f4qldJoupjaBEVL40DGMO7JPgB05BdREYh/prPSJyMybxrIbcsaDQIDAQAB"
_dmarc.immigrationmatters.ca.	1	IN	TXT	"v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:dmarcreports@immigrationmatters.ca"
immigrationmatters.ca.	1	IN	TXT	"v=spf1 +mx +a ~all"
server.immigrationmatters.ca.	1	IN	TXT	"v=spf1 +a ~all"

This is the weirdest thing why it is only happening for a single user. If there is any more information needed let me know. Any suggestion is welcome, thank you.