# \#smtp

**URL:** https://community.a10networks.com/tag/smtp/100.md

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## [Restrict SMTP to list of allowed IPs](https://community.a10networks.com/t/restrict-smtp-to-list-of-allowed-ips/276)

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**Author:** [@holyera](https://community.a10networks.com/u/holyera)\
**Replies:** 3\
**Last updated:** [March 11, 2016, 3:56pm UTC](https://community.a10networks.com/t/restrict-smtp-to-list-of-allowed-ips/276 "2016-03-11T15:56:48Z")

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MS Exchange 2007 services under one VIP, on AX 3200-12’s in one-arm mode. I want to restrict the SMTP service to allow only a predefined list of client IP addresses or networks to go through. This would match the allow l…