Message Control SMTP sending type: Not robust against lagging SMTP connection

Message Control SMTP sending type: Not robust against lagging SMTP connection

Summary

The message control engine tried to send the EHLO before the received server greeting was fully received (due to lagging connection - there was just one receive attempt without timeout). Now, the engine uses a 10 second timeout for completely receiving the server greeting (both SMTP and POP connection either continue when the server greeting was received or abort after the timeout).

Description

The message control engine tried to send the EHLO before the received server greeting was fully received (due to lagging connection - there was just one receive attempt without timeout). Now, the engine uses a 10 second timeout for completely receiving the server greeting (both SMTP and POP connection either continue when the server greeting was received or abort after the timeout).



Issue Number: 226462
Fixed on Date: 9.9.2020
Versions: 8.10 0 BUILD 68622 | 8.20 0 BUILD 68579

    • Related Articles

    • Checklist: Message Control

      Time estimate: 15 minutes Please go through all the points in the following checklist. If necessary, confirm with IT Department any information you cannot verify before contacting your local COPA-DATA Representative. Screenshot and followed ...

    • Message Control SMTP Encrypted sending type not robust against laggy network connection

      Summary When the SYN-ACK is received with a delay higher than 100ms, openSSL reports "connecting failed - no more retries". Added a logical retry loop: in this case wait 1 second and then retry (max 3 attempts) to resolve this. Verified by debugging: ...

    • FAQ: Send and receive Email via SMTP does not work

      Many email providers require the use of app passwords when accessing their services through third-party software. If you need to use SMTP or POP3 (or IMAP) to access your email, you will need to generate an app password specifically for that ...

    • FAQ: Message Control || VoIP message is sent but can’t be heard

      In a VoIP message the audio file can use several codec formats for its compression. When a call is set up, then sometimes some target providers already play back the ringing to the call as an audio stream. This can be done in several or one specific ...

    • E-Mail Messages sent from Message control with SMTP cannot be acknowldged correctly.

      Summary E-mail messages sent from Message Control with SMTP cannot be acknowledged correctly by replying to the e-mail. The e-mail in the inbox is correctly detected, but the message is not acknowledged DescriptionE-mail messages sent from Message ...