Email attachments
Contents
Email security and attachments
XMission rejects email attachments with commonly malicious file formats as a security measure to prevent potential viruses from impacting customers. Rejecting emails with executable files, for example file.exe, will protect you from possibly receiving malicious software containing a virus or malware.
This blocking is applied to all inbound and outbound email. Automatically, a reject notice will be sent to any sender attempting to send to, or from, the XMission mail system.
Blocked file types
Rejected files end in: scr, vbs, dll, exe, shs, bat, lnk, pif, chm, hta, com, cmd
Zip to send
XMission customers needing to send a file type on this list can archive it as a ".zip" file first, then send that file as an attachment.
Maximum attachment sizes
XMission allows email attachments with the following sizes:
- Up to 10 MB for @xmission.com accounts via https://webmail.xmission.com
- Up to 25 MB for @xmission.com email sent with mail applications
- Up to 50 MB for our hosted Zimbra email sent to external
Learn more
Learn how XMission filters for viruses and spam.
