Ambiguous emails subject in high volume mail in Top Sender

[irshad.ahmed21]

Dear all,

In Cisco ESA HIGH Volume Mail in Top Sender report we have found ambiguous emails subject like (=?utf-8?b?qwxsawvkrglyzwn0ie...) are in top ten.How we can see the details of sender and recipients for particular subject like (=?utf-8?b?qwxsawvkrglyzwn0ie...).

Image attached for your reference.

[Raed Boshmaf]

Hi irsahd,

You should be able to search for the Subject as it is from the message tracking or grep the mail_logs from the CLI. And from there you can get all the information you are looking for.

Regards

Raed

[exMSW4319]

It helps to know that ?utf-8?Q? (and B?) is an encoding instruction and won't be picked up by the message tracking facility. My off-platform grep is also struggling with it, despite quoting.

[irshad.ahmed21]

Solved.This happens when the Subject header is encoded to include characters beyond the standard ASCII range. This is done because SMTP is limited to 7-bit characters. Any 'hi-bit' characters must be encoded to fit into this range.