https://community.checkpoint.com/t5/Email-and-Collaboration/MTA-Timeout-exceeded/m-p/121644#M309 <P>The customer turned on MTA and threat simulation, and after a few days of use, there was a long email timeout every day</P><P>We found the following problems through observation:</P><P>1. When there is a large number of mass mailings, there will be mail timeouts, and most of the timeout mails are group mails.</P><P>2. If there is no mass mailing, it is normal to receive mails</P><P>3. We checked and found that the threat simulation will simulate all the emails in the group email, which we think is unreasonable.</P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12233iD946F71CE2A67C2E/image-size/large?v=v2&amp;px=999" role="button" title="1.png" alt="1.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="2.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12234i76DF563F17EFBF35/image-size/large?v=v2&amp;px=999" role="button" title="2.png" alt="2.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="3.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12235i3A7732B064617A31/image-size/large?v=v2&amp;px=999" role="button" title="3.png" alt="3.png" /></span></P> Sun, 20 Jun 2021 13:31:48 GMT neiren 2021-06-20T13:31:48Z https://community.checkpoint.com/t5/Email-and-Collaboration/MTA-Timeout-exceeded/m-p/121644#M309 <P>The customer turned on MTA and threat simulation, and after a few days of use, there was a long email timeout every day</P><P>We found the following problems through observation:</P><P>1. When there is a large number of mass mailings, there will be mail timeouts, and most of the timeout mails are group mails.</P><P>2. If there is no mass mailing, it is normal to receive mails</P><P>3. We checked and found that the threat simulation will simulate all the emails in the group email, which we think is unreasonable.</P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12233iD946F71CE2A67C2E/image-size/large?v=v2&amp;px=999" role="button" title="1.png" alt="1.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="2.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12234i76DF563F17EFBF35/image-size/large?v=v2&amp;px=999" role="button" title="2.png" alt="2.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="3.png" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/12235i3A7732B064617A31/image-size/large?v=v2&amp;px=999" role="button" title="3.png" alt="3.png" /></span></P> Sun, 20 Jun 2021 13:31:48 GMT https://community.checkpoint.com/t5/Email-and-Collaboration/MTA-Timeout-exceeded/m-p/121644#M309 neiren 2021-06-20T13:31:48Z https://community.checkpoint.com/t5/Email-and-Collaboration/MTA-Timeout-exceeded/m-p/121648#M310 <P>Is this the Harmony Email and Office product (where you posted this) is this Threat Emulation on a Check Point appliance?<BR />If the latter, please provide version/JHF and a diagram.<BR />Are these outbound emails you are trying to send or inbound ones?<BR />In either case, it seems like these bulk emails should be excluded from scanning, since I assume they are coming from a known, trusted source.&nbsp;</P> Sun, 20 Jun 2021 17:09:47 GMT https://community.checkpoint.com/t5/Email-and-Collaboration/MTA-Timeout-exceeded/m-p/121648#M310 PhoneBoy 2021-06-20T17:09:47Z