- Community Home
- >
- Networking
- >
- Switching and Routing
- >
- Web and Unmanaged
- >
- Re: Issues with sending email on a 1820 24G switch...
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
08-11-2016 12:28 AM
08-11-2016 12:28 AM
Issues with sending email on a 1820 24G switch with VLAN enabled
Hello
My office has just upgraded to the 1820 24G series switches. I have setup 5 different VLAN's. I have my servers and workstations on one and several other servers on an isolated VLAN as well as a voice VLAN.
We have Office365 and is configured with Outlook 2016. Internet works fine, no issues with video, audio or any type of TCP/UDP connection. However there is one strange issue i cannot seem to get a hold of. When on a VLAN my Outlook tends to have issues sending email and can sit in the inbox for quite some time. I have noticed when sending plain text emails it seems to work ok but when i attach my signature or other images, basically a larger email in size., my Outlook outbox begins to build up. I am not a complete noob and i do have at least the bare basic knowledge if not even intermediate. So I cannot figure out as to why this type of packet is being lost. I know the Office 365 SMTP server is smtp.office365.com and uses port 443 to send out email or make the connection. I have ran some wireshark packet capturing and i will post my findings below.
25098 254.333223 192.168.93.32 132.245.42.242 TCP 54 50645 → 443 [ACK] Seq=1 Ack=7357 Win=256 Len=0
28707 299.333584 132.245.42.242 192.168.93.32 TLSv1.2 139 Application Data
28709 299.333929 192.168.93.32 132.245.42.242 TCP 54 50645 → 443 [ACK] Seq=1 Ack=8583 Win=256 Len=0
29941 312.509098 192.168.93.32 132.245.42.242 TCP 66 51367 → 443 [SYN] Seq=0 Win=8192 Len=0 MSS=1460 WS=256 SACK_PERM=1
29951 312.615293 132.245.42.242 192.168.93.32 TCP 66 443 → 51369 [SYN, ACK] Seq=0 Ack=1 Win=8190 Len=0 MSS=1460 WS=16 SACK_PERM=1
30019 312.893771 132.245.42.242 192.168.93.32 TLSv1.2 161 Change Cipher Spec, Encrypted Handshake Message
30020 312.894658 192.168.93.32 132.245.42.242 TLSv1.2 523 Application Data
30021 312.894889 192.168.93.32 132.245.42.242 TCP 4434 [TCP segment of a reassembled PDU]
30036 312.998039 132.245.42.242 192.168.93.32 TCP 60 443 → 51369 [ACK] Seq=5874 Ack=882 Win=64768 Len=0
30037 312.998089 192.168.93.32 132.245.42.242 TCP 1514 [TCP segment of a reassembled PDU]
30072 313.298977 192.168.93.32 132.245.42.242 TCP 1514 [TCP Retransmission] 51369 → 443 [ACK] Seq=882 Ack=5874 Win=65536 Len=1460
30080 313.361295 192.168.93.32 132.245.42.242 TCP 1514 [TCP Retransmission] 51367 → 443 [ACK] Seq=882 Ack=5874 Win=65536 Len=1460
30087 313.442353 192.168.93.32 132.245.42.242 TCP 1514 [TCP Retransmission] 51368 → 443 [ACK] Seq=882 Ack=5874 Win=65536 Len=1460
Thanks
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
08-12-2016 07:47 PM
08-12-2016 07:47 PM
Re: Issues with sending email on a 1820 24G switch with VLAN enabled
Hey all
here is a post of my wireshark findings below.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
08-16-2016 06:02 AM - edited 08-16-2016 06:09 AM
08-16-2016 06:02 AM - edited 08-16-2016 06:09 AM
Re: Issues with sending email on a 1820 24G switch with VLAN enabled
Hi. Not sure why you would think this has anything to do with the switch?
Have you seen this article> https://support.microsoft.com/en-us/kb/2441551
Edit: Do you have some AV that is causing the problem with attachments?