Hello I am having recurrent issues when sending emails using my Virgin account from Outlook. Usually it happens when I send emails containing JPGs, sometimes I can send several pictures without any problems, then ONE particular picture will cause the email to become undeliverable. this is the error I got today: -------------------------------- Subject: Porch fitted in ******** Sent: 06/05/2019 15:01 The following recipient(s) cannot be reached: **************** on 06/05/2019 15:01 552 5.7.0 SPAM Content Found (VM603) NeAoh16pIZ2KmNeAohjCnB -------------------------------- can you shed some light? thanks in Advance.
The matching data that spam filters use is frequently updated and it is likely a false positives that should clear itself in either 6, 12, or 24 hours. If the issue persists then the forum team are best placed to help and can correlate the unique tag ID NeAoh16pIZ2KmNeAohjCnB with its log entry to find the cause; be aware it can take them a few days to work through to your post.
Whilst waiting for the forum team to respond consider try the following workarounds temporarily:
compress the image before sending, for example as a zip file
convert the image to another format, for example: JPEG to PDF or PNG
rescale the image
⸏ Help other forum users by marking a post as if it was helpful and / or if it helped solve the issue; the latter will show this thread as Answered.
I have several email addresses, by a “different server” I mean a different SMPT address that has nothing to do with Virgin
Alice.it is like google... I am not even wasting my time; besides today it was working fine, on the other side email senyt to LIBERO.IT were having the same issue and only from the Virgin SMTP address.
I understand the request to not mix up things , but somehow I have the feeling the two issues are related.
The VM603 problem is definitely down to Virgin Media.
But lets have a closer look at the second one.
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients was aborted after 37 minute(s):
Reason: This is the mail system at host know-smtprelay-8-imp.
I am sorry to have to inform you that your message, "RE: discussion ", has not yet been delivered to firstname.lastname@example.org.
The remote server returned the below error when attempting delivery:
451:451 <email@example.com> unable to verify address
So what's happening here:
This is down to the server responsible for the alice.it address employing - sender address verification. Essentially it takes the sender address and then tries to contact the mail exchanger responsible for that address and act out the first steps of an email delivery in order to make sure that the sender address is a genuine address.
However Sender callouts are problematical.
The same mechanism can be used by spammers to clean up their email lists.
They cause unwanted traffic.
Just because a sending email address exists. This does not prove that the address in the mail is genuine.
Despite sender callouts having been largely discredited, some email servers still try using them. However as the sender callout is not succeeding the server effectively puts the mail on hold.
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