Email attachments: Difference between revisions
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This blocking is applied to all ''inbound and outbound'' email with attachments. A reject notice will automatically be sent to any sender attempting to send to, or from, the XMission mail system. | This blocking is applied to all ''inbound and outbound'' email with attachments. A reject notice will automatically be sent to any sender attempting to send to, or from, the XMission mail system. | ||
Business customers with hosted Zimbra email do not have attachments blocked between accounts on their domain. | |||
==Blocked file types== | ==Blocked file types== | ||
Rejected files end in: '''scr, vbs, dll, exe, shs, bat, lnk, pif, chm, hta, com, cmd, reg, js, cpl, jsp, vbe, sys, btm, pfr, vb''' | |||
==Maximum Attachment Sizes== | |||
XMission allows email attachments with the following sizes: | |||
* Up to 100 MB for @xmission.com accounts via [https://webmail.xmission.com Webmail.XMission.com]. | |||
* Up to 100 MB for @xmission.com email sent with mail applications. | |||
* Up to 50 MB for our hosted Zimbra email. | |||
* Up to 100 MB for our hosted Zimbra email to another one of our hosted Zimbra email accounts. | |||
'''Note: MIME encoding will change the size of the of the attachment significantly.''' | |||
'''Note: Many other email providers have a maximum attachment size for inbound mail capped at 25MB.''' | |||
* Up to | == Maximum Recipient Limit == | ||
* Up to | * Up to 500 on [https://zimbra.xmission.com Zimbra] via web interface. | ||
* Up to 1000 using a mail application. | |||
To send in larger increments, please inquire with our sales department about our [[Mailing Lists]] product. | |||
==Learn more== | ==Learn more== | ||
Learn how XMission [http://transmission.xmission.com/2013/08/14/how-xmission-spam-and-virus-filtering-works filters for viruses and spam]. | |||
[[Category: Email]] | |||
Latest revision as of 09:02, 8 October 2026
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 with attachments. A reject notice will automatically be sent to any sender attempting to send to, or from, the XMission mail system.
Business customers with hosted Zimbra email do not have attachments blocked between accounts on their domain.
Blocked file types
Rejected files end in: scr, vbs, dll, exe, shs, bat, lnk, pif, chm, hta, com, cmd, reg, js, cpl, jsp, vbe, sys, btm, pfr, vb
Maximum Attachment Sizes
XMission allows email attachments with the following sizes:
- Up to 100 MB for @xmission.com accounts via Webmail.XMission.com.
- Up to 100 MB for @xmission.com email sent with mail applications.
- Up to 50 MB for our hosted Zimbra email.
- Up to 100 MB for our hosted Zimbra email to another one of our hosted Zimbra email accounts.
Note: MIME encoding will change the size of the of the attachment significantly.
Note: Many other email providers have a maximum attachment size for inbound mail capped at 25MB.
Maximum Recipient Limit
- Up to 500 on Zimbra via web interface.
- Up to 1000 using a mail application.
To send in larger increments, please inquire with our sales department about our Mailing Lists product.
Learn more
Learn how XMission filters for viruses and spam.