Why is inbound SMTP failing for about 20 minutes?
Question asked by Mark Thornton - January 12, 2017 at 9:35 PM
Unanswered
This occurred last night around midnight. Continued for about 20 minutes then cleared up on it's own. Internal mail was still processing between sessions in webmail. Where do I look for more detail?
 
23:55:18 [192.168.1.10][3631778] connected at 1/11/2017 11:55:18 PM
23:55:18 [192.168.1.10][3631778] "421 Server is busy, try again later." response returned.
23:55:18 [192.168.1.10][3631778] IP is blacklisted
23:55:18 [192.168.1.10][3631778] disconnected at 1/11/2017 11:55:18 PM
23:55:18 [192.168.1.10][19423415] connected at 1/11/2017 11:55:18 PM
23:55:18 [192.168.1.10][19423415] "421 Server is busy, try again later." response returned.
23:55:18 [192.168.1.10][19423415] IP is blacklisted
23:55:18 [192.168.1.10][19423415] disconnected at 1/11/2017 11:55:18 PM
23:55:18 [192.168.1.10][7976794] connected at 1/11/2017 11:55:18 PM
23:55:18 [192.168.1.10][7976794] "421 Server is busy, try again later." response returned.
23:55:18 [192.168.1.10][7976794] IP is blacklisted
23:55:18 [192.168.1.10][7976794] disconnected at 1/11/2017 11:55:18 PM
 

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Operating system? SmarterMail version?
Bruce Barnes
ChicagoNetTech Inc
brucecnt@comcast.net

Phonr: (773) 491-9019
Phone: (224) 444-0169

E-Mail and DNS Security Specialist
Network Security Specialist

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Web and E-Mail Hosting, E-Mail Security and Consulting
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Windows 2012, SmarterMail Version 14.6.5974
This is behind a Sonicwall with anti-spam filtering enabled.

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