Forum Discussion

JGCovalt's avatar
JGCovalt
Icon for Nimbostratus rankNimbostratus
Dec 29, 2023

SMTP Traffic Forward to M365 on Port 587

We're working on tranisitioning away from using our internal Exchange servers for SMTP, and instead pointing to M365 directly via the F5. I have had success sending anonymous traffic on port 25, but ...
application delivery
cloud
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Dec 29, 2023

hi JGCovalt, congrats on inheriting the BIG-IP! Welcome to the community, and hopefully we can assist. Just a couple comments/resources to get you thinking before the long weekend:

 

 

  • JGCovalt's avatar
    JGCovalt
    Icon for Nimbostratus rankNimbostratus
    Jan 03, 2024

    I have a pool and virtual machine set up for 25 and another for 587, and can confirm that both are getting a reply from M365 when seting a health check to those ports. I'd been trynig to use the iRule in your second link without success.

    The iRule on the first link you provided, however, seemed to fix the issue. I have at least one application that still won't authenticate properly on 587, but I think that's the app, not my settings.

    Thanks very much!